{"id":19404,"date":"2026-08-04T16:57:47","date_gmt":"2026-08-04T09:57:47","guid":{"rendered":"https:\/\/www.vietstock.org\/?p=19404"},"modified":"2026-08-04T16:57:47","modified_gmt":"2026-08-04T09:57:47","slug":"how-to-spray-disinfectants-in-livestock-housing","status":"publish","type":"post","link":"https:\/\/www.vietstock.org\/en\/industry-news\/how-to-spray-disinfectants-in-livestock-housing\/","title":{"rendered":"How to Spray Disinfectants in Livestock Housing: Procedure, Frequency, and Safety Notes"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">Spraying disinfectants in livestock housing is an important step in a farm biosecurity program. It helps reduce or inactivate pathogens that remain on surfaces after mechanical cleaning. However, disinfection effectiveness does not depend only on the product used. It also depends on surface cleaning, correct dilution, adequate coverage, sufficient contact time, and proper ventilation after treatment.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Carrying out the procedure correctly \u2014 from housing preparation, product selection and dilution, spraying technique, to routine frequency \u2014 is one of the key factors that directly affects practical disinfection performance.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">This article outlines basic practice steps that farmers and farm technicians can refer to when developing a livestock housing disinfection spraying procedure. When selecting products, concentrations, frequency, or response measures for situations with disease risk, users should follow the product label and consult a veterinarian or local veterinary authority.<\/span><\/p>\n<h2><b>Key Takeaways<\/b><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Mechanical cleaning must be completed before spraying because remaining manure, bedding material, mud, and organic matter can significantly reduce disinfectant effectiveness.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The right product must be selected and diluted at the correct concentration according to the label. Do not increase the concentration arbitrarily, and do not use a dilution rate intended for empty housing in housing areas where animals are present.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">When spraying, follow a fixed route, move from inside to outside and from top to bottom, ensure surfaces are evenly wetted, and maintain the contact time stated on the product label.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Disinfection frequency should be adjusted by situation: routine use under normal conditions, after depopulation, before restocking, or intensified during disease events under veterinary guidance.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Spraying in housing areas where animals are present requires special caution. Only use products allowed by the label, do not spray directly onto animals, and ensure appropriate ventilation.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Microbial preparations may support livestock housing environmental management under certain conditions, but they should not be treated as substitutes for chemical disinfectants when rapid reduction of pathogen pressure is needed.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Applicators must wear proper personal protective equipment and handle leftover solution, packaging, and wastewater after disinfection in accordance with regulations.<\/span><\/li>\n<\/ul>\n<h2><b>The Role of Disinfection Spraying in Livestock Housing Biosecurity<\/b><\/h2>\n<figure id=\"attachment_19384\" aria-describedby=\"caption-attachment-19384\" style=\"width: 969px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-19384\" src=\"https:\/\/www.vietstock.org\/wp-content\/uploads\/2026\/08\/istockphoto-2276192646-612x612-1.jpg\" alt=\"Worker wearing protective equipment spraying disinfectant inside livestock housing\" width=\"979\" height=\"651\" srcset=\"https:\/\/www.vietstock.org\/wp-content\/uploads\/2026\/08\/istockphoto-2276192646-612x612-1.jpg 612w, https:\/\/www.vietstock.org\/wp-content\/uploads\/2026\/08\/istockphoto-2276192646-612x612-1-300x200.jpg 300w\" sizes=\"(max-width: 979px) 100vw, 979px\" \/><figcaption id=\"caption-attachment-19384\" class=\"wp-caption-text\">Disinfection spraying helps reduce remaining pathogens after manure, dirt, and organic matter have been mechanically removed.<\/figcaption><\/figure>\n<h3><b>What Is Livestock Housing Disinfection and How Is It Different from Mechanical Cleaning?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Mechanical cleaning is the physical removal of organic dirt such as manure, bedding material, leftover feed, mud, and surface biofilms. This step helps reduce dirt and part of the pathogen load in the environment, but it cannot replace disinfection with a suitable product.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Disinfection is the next step. It uses chemicals or products registered for the appropriate purpose to reduce or inactivate bacteria, viruses, fungi, and certain remaining pathogens on surfaces after cleaning.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">These two steps complement each other and cannot replace one another. If disinfectant is sprayed onto surfaces still covered with manure, mud, or organic matter, the active ingredient may be neutralized, fail to contact the surface that needs treatment, and lose effectiveness significantly.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">In livestock practice, the terms \u201csanitization\u201d and \u201cdisinfection\u201d are sometimes used interchangeably in common language. However, when applied in a technical procedure, users need to follow the definitions, scope of use, and instructions stated on the product label or technical documents.<\/span><\/p>\n<h3><b>Why Does Regular Disinfection Spraying Help Control Disease in Pigs, Poultry, and Cattle?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Many pathogens can survive on livestock housing surfaces for several hours to many days or longer, depending on the pathogen, surface material, temperature, humidity, and level of organic matter in the environment.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Routine disinfection spraying may help:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Interrupt part of the infection cycle.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Reduce pathogen pressure in the livestock housing environment.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Limit spread between areas within the farm.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Reduce the risk of pathogens entering the livestock area from outside.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Support herd and flock protection during high-risk periods.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Maintain more stable hygiene conditions between major cleaning events.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">However, disinfection spraying is only one link in the overall biosecurity chain. A complete biosecurity program also needs to combine:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Access control for people.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Vehicle control.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Waste management.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Downtime management.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Control of animal sourcing.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Vaccination according to an appropriate program.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Herd and flock health monitoring.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Isolation and restocking procedures.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Vector control.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">This article focuses on disinfection spraying techniques. Overall biosecurity plans, downtime procedures, and restocking procedures should be developed separately according to each farm type.<\/span><\/p>\n<h2><b>Preparation Before Spraying Disinfectants in Livestock Housing<\/b><\/h2>\n<figure id=\"attachment_19386\" aria-describedby=\"caption-attachment-19386\" style=\"width: 1215px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-19386\" src=\"https:\/\/www.vietstock.org\/wp-content\/uploads\/2026\/08\/istockphoto-1338891121-612x612-1.jpg\" alt=\"Worker preparing a livestock housing area before disinfectant spraying\" width=\"1225\" height=\"816\" srcset=\"https:\/\/www.vietstock.org\/wp-content\/uploads\/2026\/08\/istockphoto-1338891121-612x612-1.jpg 612w, https:\/\/www.vietstock.org\/wp-content\/uploads\/2026\/08\/istockphoto-1338891121-612x612-1-300x200.jpg 300w\" sizes=\"(max-width: 1225px) 100vw, 1225px\" \/><figcaption id=\"caption-attachment-19386\" class=\"wp-caption-text\">Livestock housing should be cleaned, drained, and inspected for hidden areas before disinfectant is applied.<\/figcaption><\/figure>\n<h3><b>Mechanical Cleaning: Remove Manure, Bedding, and Wash Feeders, Drinkers, and Drainage Channels<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Before spraying, the full mechanical cleaning process needs to be completed. This is the foundation that determines the effectiveness of the subsequent disinfection step.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Tasks include:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Collecting and removing manure from the housing area.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Removing old bedding material.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Collecting leftover feed.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Scrubbing feeders and drinkers with clean water and a suitable brush.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Cleaning feed trays.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Clearing drainage channels.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Removing accumulated mud, waste, and organic matter.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Washing walls, floors, and hard surfaces if conditions allow.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Loosening dirt stuck to floors, housing corners, and areas under equipment.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Allowing surfaces to drain before spraying, unless the product label instructs otherwise.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Only when surfaces are relatively clean can disinfectants contact the treatment area directly and work more effectively. Spraying more product cannot compensate for skipped mechanical cleaning.<\/span><\/p>\n<h3><b>Inspect Housing Structure: Surfaces, Cracks, Standing-Water Points, and Easily Missed Areas<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Before spraying, the entire housing area should be inspected to identify high-risk areas or locations that are easily missed during treatment.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Areas to check include:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Wall gaps.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Floor cracks.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Junctions between floors and walls.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Standing-water points.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Areas that remain damp after washing.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Hidden corners behind equipment.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Areas under feeders.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Areas under cages.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Areas under floors.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Wooden or porous surfaces.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Drainage channels.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Locations missed during previous spraying rounds.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Standing-water areas should be cleared, dried, or improved for drainage before spraying. If standing water remains, the disinfectant solution may become diluted, fail to maintain adequate contact time, and run out of the treatment area.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Wooden or porous surfaces often absorb solution faster than smooth surfaces, so spraying technique may need to be adjusted according to product instructions. The same amount of solution should not be applied mechanically to every surface type if real conditions differ.<\/span><\/p>\n<h3><b>Prepare Spraying Equipment and Personal Protective Equipment<\/b><\/h3>\n<figure id=\"attachment_19388\" aria-describedby=\"caption-attachment-19388\" style=\"width: 1051px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-19388\" src=\"https:\/\/www.vietstock.org\/wp-content\/uploads\/2026\/08\/istockphoto-1412023419-612x612-1.jpg\" alt=\"Backpack disinfectant sprayer prepared for use in livestock housing\" width=\"1061\" height=\"707\" srcset=\"https:\/\/www.vietstock.org\/wp-content\/uploads\/2026\/08\/istockphoto-1412023419-612x612-1.jpg 612w, https:\/\/www.vietstock.org\/wp-content\/uploads\/2026\/08\/istockphoto-1412023419-612x612-1-300x200.jpg 300w\" sizes=\"(max-width: 1061px) 100vw, 1061px\" \/><figcaption id=\"caption-attachment-19388\" class=\"wp-caption-text\">Sprayer tanks, hoses, valves, nozzles, and pressure should be checked before each disinfection procedure.<\/figcaption><\/figure>\n<p><span style=\"font-weight: 400;\">Spraying equipment should be checked before each use to avoid leaks, blocked nozzles, or uneven application.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">For hand sprayers or pressure sprayers, check:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Valves.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Nozzles.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Hoses.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Spray tips.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Tank.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Spray pressure.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Leakage.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Chemical residue from previous use.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Sprayers should be cleaned before a new product is mixed. Chemical residue should not be left in the tank because it may change effectiveness or cause unwanted reactions when another product is used.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">When selecting a nozzle, consider the purpose of use:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A fine-mist nozzle may be suitable for areas that need light mist coverage, but it should only be used when the product label and ventilation conditions allow it.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A jet or pressure nozzle may be more suitable for hard surfaces, cracks, or areas that need thorough wetting.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Excessive pressure should not be used if it causes splashback, excessive runoff, or unnecessary chemical vapor dispersion.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Applicators need to prepare adequate personal protective equipment, especially when using products with strong odors, chemical vapors, or irritation risks.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Protective equipment should include:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A chemical-filtering mask or respirator suitable for the product.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Do not use ordinary cloth masks with products that produce toxic vapors or strong chemical odors.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Sealed safety goggles.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Thick rubber gloves.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Protective clothing or disposable rainwear.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Rubber boots.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Face shield if there is a risk of splashback.<\/span><\/li>\n<\/ul>\n<h3><b>Arrange Animals and Set Up Ventilation Before Spraying<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">If animals are present in the housing area, disinfection spraying requires much greater caution than spraying empty housing. Not every product can be used in areas where animals are present.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Spraying should only be carried out when all of the following conditions are met:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The product label allows use in areas with animals.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The dilution concentration follows the label instructions.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The spraying method is recommended by the manufacturer.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The housing area has appropriate ventilation.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The product is not sprayed directly onto animals.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">There is a plan to monitor the herd or flock after spraying.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Applicators have sufficient protective equipment.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">In many cases, animals need to be moved out of the spraying area or another suitable treatment method should be used. Extra caution is needed with young animals, stressed herds or flocks, animals with respiratory disease, or poorly ventilated housing.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Ventilation before, during, and after spraying must follow:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Product label instructions.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Farm safety procedures.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Actual housing conditions.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Recommendations from the veterinarian or technician in charge.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">A single fixed ventilation formula should not be applied to every situation because each housing type, animal species, product, and weather condition may require different handling.<\/span><\/p>\n<h2><b>Selecting and Diluting Disinfectants for Livestock Housing Spraying<\/b><\/h2>\n<h3><b>Common Disinfectant Groups Used in Livestock Production<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Disinfectant groups commonly used in livestock production have different characteristics, scopes of use, and safety profiles. The table below summarizes general characteristics for reference only. Actual effectiveness depends on product formulation, concentration, contact time, mixing-water quality, level of organic matter, surface type, and target pathogen.<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td><b>Active ingredient group<\/b><\/td>\n<td><b>Main advantages<\/b><\/td>\n<td><b>Limitations to note<\/b><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Chlorine compounds<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Relatively broad spectrum, low cost, fast action under suitable conditions<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Effectiveness can be reduced by high organic matter, may corrode metals at high concentrations, must not be mixed with acids or ammonia<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Iodophors<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Relatively broad spectrum against many bacteria, viruses, and fungi when used under appropriate conditions<\/span><\/td>\n<td><span style=\"font-weight: 400;\">May be affected by pH, organic matter, and product formulation; may leave stains on surfaces<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Quaternary ammonium compounds (QACs)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Low odor, less corrosive, relatively easy to use in some routine hygiene programs<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Usually less effective against spores and many non-enveloped viruses; easily affected by soap, anionic detergents, and organic matter<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Glutaraldehyde and aldehyde products<\/span><\/td>\n<td><span style=\"font-weight: 400;\">May have high efficacy against many bacteria, viruses, and fungi under suitable conditions<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Higher toxicity, requires sufficient contact time, strict ventilation, and protective equipment; activity against spores depends on the product label<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Peroxygen compounds or strong oxidizers<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Broad spectrum under many conditions of use, often used in high-efficacy programs<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Higher cost, may be corrosive at high concentrations, must be stored and used according to instructions<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><b>Note:<\/b><span style=\"font-weight: 400;\"> Lime and microbial preparations may support livestock housing environmental management under certain conditions, but they should not be placed on the same level as chemical disinfectants used for spraying. Lime is often more suitable for treating floors, pathways, or surrounding areas. Microbial preparations may support odor, waste, or environmental management, but they do not replace disinfectants when rapid reduction of pathogen pressure is required.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">A detailed comparison of each group by pathogen type and housing condition should be presented in a separate in-depth article on livestock housing disinfectant groups.<\/span><\/p>\n<h3><b>Criteria for Selecting Products by Animal Species, Target Pathogen, and Housing Conditions<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">When selecting a disinfectant product, farmers should not rely only on cost or advertising. Multiple factors need to be considered to ensure that the product suits real farm conditions.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Key criteria include:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Target pathogen:<\/b><span style=\"font-weight: 400;\"> Lipid-enveloped viruses are often more sensitive to many active ingredient groups than non-enveloped viruses. For highly resistant pathogens, products with suitable efficacy claims on the label should be prioritized.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Animal species:<\/b><span style=\"font-weight: 400;\"> Each species may have different sensitivity to chemicals, vapors, and spraying conditions.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Production stage:<\/b><span style=\"font-weight: 400;\"> Young poultry, piglets, calves, or weakened animals are often more sensitive to chemical vapors, moisture, and high concentrations.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Housing status:<\/b><span style=\"font-weight: 400;\"> Empty housing usually allows more active ingredient groups to be used than housing areas where animals are present.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Surface conditions:<\/b><span style=\"font-weight: 400;\"> Surfaces with high organic matter, porous surfaces, or surfaces with many cracks need suitable products and spraying techniques.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Corrosion risk:<\/b><span style=\"font-weight: 400;\"> This is important for housing with many metal devices, troughs, grids, fans, or pipes.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Ventilation conditions:<\/b><span style=\"font-weight: 400;\"> Enclosed housing requires greater caution when using products with strong odors or chemical vapors.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Legal compliance:<\/b><span style=\"font-weight: 400;\"> Priority should be given to products legally registered for circulation in Vietnam, with clear labels and Vietnamese instructions for use.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Always consult a veterinarian, the technician in charge, or a qualified supplier when selecting a product for a specific disease-risk situation.<\/span><\/p>\n<h3><b>How to Dilute Products Correctly: Dilution Ratio, Water Source, and Label Check<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Correct dilution is essential for effective disinfection and for reducing risks to people, animals, equipment, and the environment.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Dilution principles include:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Read the product label carefully before mixing.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Check the expiry date.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Check storage conditions.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Use clean water.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Use water with suitable pH if required by the product.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Do not use water with excessive sediment or organic matter.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Dilute according to the ratio recommended on the label.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Do not increase the concentration with the assumption that \u201cstronger is more effective\u201d.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Use measuring cups, measuring cylinders, or dosing equipment.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Do not estimate by eye.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Mix only the amount needed for the day.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Do not store diluted solution for several days unless the manufacturer allows it.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Do not mix multiple products together unless there is specific guidance.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">If the water source is unstable, has high sediment, abnormal pH, or high hardness, ask the product supplier about water-quality requirements before use.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">An excessively high concentration may cause:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Respiratory irritation.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Skin and eye irritation.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Stress in animals.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Equipment corrosion.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Chemical waste.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Increased residue risk.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Higher risk for applicators.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Conversely, a concentration that is too low may prevent the product from achieving the required effectiveness, especially when surfaces have not been cleaned thoroughly or the target pathogen is highly resistant.<\/span><\/p>\n<h3><b>Concentration Limits When Spraying in Housing Areas With Animals<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">When animals are present, only use products that meet all of the following conditions:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The product label allows use in areas with animals.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A concentration or dilution rate is provided specifically for use when animals are present.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The spraying method is recommended by the manufacturer.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Instructions are provided for contact time, ventilation, and safe re-entry or isolation time if needed.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The product is suitable for the animal species, age, and health status of the herd or flock.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Do not use the dilution rate intended for empty housing when spraying in areas where animals are present. Some products containing glutaraldehyde, phenolics, high-concentration chlorine, or other strong active ingredients may not be suitable for direct spraying when animals are present.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">If it is unclear whether a product can be used in occupied housing, check the label and consult a veterinarian before making a decision.<\/span><\/p>\n<h2><b>Correct Techniques for Spraying Disinfectants in Livestock Housing<\/b><\/h2>\n<figure id=\"attachment_19390\" aria-describedby=\"caption-attachment-19390\" style=\"width: 1074px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-19390\" src=\"https:\/\/www.vietstock.org\/wp-content\/uploads\/2026\/08\/istockphoto-2276192684-612x612-1.jpg\" alt=\"Worker spraying disinfectant along a fixed route inside livestock housing\" width=\"1084\" height=\"721\" srcset=\"https:\/\/www.vietstock.org\/wp-content\/uploads\/2026\/08\/istockphoto-2276192684-612x612-1.jpg 612w, https:\/\/www.vietstock.org\/wp-content\/uploads\/2026\/08\/istockphoto-2276192684-612x612-1-300x200.jpg 300w\" sizes=\"(max-width: 1084px) 100vw, 1084px\" \/><figcaption id=\"caption-attachment-19390\" class=\"wp-caption-text\">A fixed spraying route from inside to outside and from top to bottom helps prevent missed surfaces and repeated contamination.<\/figcaption><\/figure>\n<h3><b>Spraying Route: From Inside to Outside, From Top to Bottom, and in a Zigzag Pattern<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">A fixed route should be used during spraying to avoid missing areas and to reduce the need to step back into treated zones.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Spraying route principles include:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Start from the innermost part of the housing area.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Move gradually toward the entrance.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Avoid stepping back into treated areas.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Limit carrying pathogens from outside areas into treated areas.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Spray from top to bottom.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Spray ceilings and beams first.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Then spray walls.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Finally spray floors and drainage channels.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Move in a zigzag or even sweeping pattern.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Do not miss narrow strips between spray passes.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">The spraying route should be standardized into a checklist for each housing area, especially on farms with multiple housing rows, multi-tier cage systems, or several support areas.<\/span><\/p>\n<h3><b>Spraying Techniques for Each Surface: Walls, Ceilings, Floors, Drainage Channels, Hidden Corners, and Farm Tools<\/b><\/h3>\n<h4><b>Walls and Ceilings<\/b><\/h4>\n<p><span style=\"font-weight: 400;\">When spraying walls and ceilings, keep the nozzle at a distance suitable for the nozzle type, pressure, and equipment instructions. The goal is to create an even layer of solution on the surface, not to spray so strongly that the solution splashes back or runs off in streams.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Pay attention to:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Cracks.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Gaps.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Beams.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Underside of the roof.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Junctions between walls and ceilings.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Areas behind hanging equipment.<\/span><\/li>\n<\/ul>\n<h4><b>Floors<\/b><\/h4>\n<p><span style=\"font-weight: 400;\">Floors are exposed to waste, wash water, spilled feed, and pathogens. When spraying floors, ensure that surfaces are evenly wetted.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Pay attention to:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Junctions between floors and walls.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Housing corners.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Areas under feeders.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Areas under drinkers.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Floor cracks.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Areas that were previously damp or had standing water.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Porous, rough, or fast-absorbing surfaces may require adjustment of solution volume according to the product label and actual conditions.<\/span><\/p>\n<h4><b>Drainage Channels<\/b><\/h4>\n<p><span style=\"font-weight: 400;\">Drainage channels should only be treated after they have been cleaned and wastewater is under control. Do not spray when drains are still full of mud, manure, or uncontrolled flow.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">When treating drainage channels:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Remove waste, mud, and organic matter first.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Wet the drainage surface adequately according to the product label.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Avoid allowing excess solution to flow directly into ponds, canals, ditches, or domestic water sources.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Manage wastewater after treatment according to farm and local regulations.<\/span><\/li>\n<\/ul>\n<h4><b>Hidden Corners and Areas Under Equipment<\/b><\/h4>\n<p><span style=\"font-weight: 400;\">Hidden corners are among the easiest areas to miss during spraying. They also often retain moisture, dust, manure, organic matter, and pathogens.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Use a long nozzle or adjust the spray angle to reach:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Areas under feeders.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Back sides of equipment.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Areas under cages.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Areas under floors.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Wall corners.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Column bases.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Cracks and joints.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">After spraying, these points should be checked again before the procedure is completed.<\/span><\/p>\n<h4><b>Farm Tools<\/b><\/h4>\n<p><span style=\"font-weight: 400;\">Farm tools such as shovels, brooms, carts, feed trays, cleaning tools, and small equipment may carry pathogens from one area to another.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Actions include:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Clean tools before spraying or soaking in disinfectant.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Spray all surfaces evenly.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Pay attention to undersides, joints, and handles.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Treat feeders and drinkers separately.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Rinse with clean water after the contact time if the label requires it.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Do not return tools to use if they still have a strong chemical odor or have not met safe-use conditions stated on the label.<\/span><\/li>\n<\/ul>\n<h3><b>Solution Volume per Square Meter and How to Recognize Adequate Surface Wetting<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">The amount of solution required depends on:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Product label.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Surface type.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Spraying method.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Surface roughness.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Absorption level.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Temperature.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Humidity.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Surface cleanliness.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">A single general application rate should not be applied to every situation. Porous or rough surfaces usually require a different amount of solution than smooth surfaces. Farms should refer to the product label or supplier to determine the suitable solution volume.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Signs that a surface has received enough solution include:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The surface is evenly wet.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A thin layer of solution covers the surface.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">No dry areas remain.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">No areas are only slightly damp.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The solution does not run off excessively in streams.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">If the solution immediately runs off in streams, too much may be applied, causing waste and increasing the risk of chemical-containing wastewater. If the surface is only slightly damp or many dry areas remain, spraying technique or solution volume should be adjusted.<\/span><\/p>\n<h3><b>Contact Time, Drying, and When Rinsing Is Needed After Spraying<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Contact time is the period during which the product needs to remain on the surface to reduce or inactivate pathogens according to product claims. This time must follow the product label and may vary depending on:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Active ingredient group.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Pathogen type.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Surface type.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Temperature.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Humidity.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Surface cleanliness.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Product formulation.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Low temperature, dirty surfaces, or insufficient contact time may reduce the effectiveness of many disinfectant products.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">After the contact time is complete, the next handling step should be based on the product label and the area treated.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">For empty housing:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Surfaces may be allowed to dry naturally if the label allows it.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Ventilation should be increased.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Animals should not be introduced if there is still a strong chemical odor, the floor is too wet, or the required waiting period has not been completed according to the instructions.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Whether rinsing is required must follow the product label; it should not be assumed to be the same for every product.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">For feeders, drinkers, and surfaces that directly contact feed or drinking water:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Rinse with clean water after the contact time if the label requires it.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Pay special attention to chemical residue risks.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Allow surfaces to dry before use.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Do not allow animals to contact tools that still have a strong chemical odor or standing solution.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">For housing areas where animals are present:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Increase ventilation after spraying.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Monitor the herd or flock.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Do not allow animals to contact surfaces with excessive standing solution.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Follow safe-use time stated on the product label, if any.<\/span><\/li>\n<\/ul>\n<h2><b>Notes When Spraying in Housing Areas Where Animals Are Present<\/b><\/h2>\n<figure id=\"attachment_19392\" aria-describedby=\"caption-attachment-19392\" style=\"width: 1132px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-19392\" src=\"https:\/\/www.vietstock.org\/wp-content\/uploads\/2026\/08\/istockphoto-1222816444-612x612-1.jpg\" alt=\"Worker inspecting a livestock facility during cleaning and disinfection activities\" width=\"1142\" height=\"761\" srcset=\"https:\/\/www.vietstock.org\/wp-content\/uploads\/2026\/08\/istockphoto-1222816444-612x612-1.jpg 612w, https:\/\/www.vietstock.org\/wp-content\/uploads\/2026\/08\/istockphoto-1222816444-612x612-1-300x200.jpg 300w\" sizes=\"(max-width: 1142px) 100vw, 1142px\" \/><figcaption id=\"caption-attachment-19392\" class=\"wp-caption-text\">Disinfectant spraying in occupied livestock housing requires an approved product, correct dilution, suitable ventilation, and close animal monitoring.<\/figcaption><\/figure>\n<p><span style=\"font-weight: 400;\">Spraying disinfectants in occupied housing requires much greater caution than spraying empty housing. Only use products whose label allows use in areas with animals, at the correct concentration, by the correct spraying method, and under suitable ventilation conditions.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Key points include:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Choose a cool time of day if conditions allow.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Do not spray directly into animals\u2019 face, eyes, nose, mouth, or respiratory tract.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Do not make animals excessively wet, especially young animals, weak animals, stressed herds or flocks, or animals kept in poorly ventilated housing.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Use fine-mist nozzles only if the product label and ventilation conditions allow it.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Do not use an overly strong spray jet.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Do not use the dilution rate intended for empty housing in occupied housing.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Monitor animals after spraying according to the product label and actual farm conditions.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">In the first few hours after spraying, pay special attention to signs of respiratory, eye, or skin irritation, or abnormal behavior.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">If animals show any of the following signs, increase ventilation immediately and contact a veterinarian:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Difficulty breathing.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Watery eyes.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Coughing.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Sneezing.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Loss of appetite.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Abnormal clustering.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Agitation.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Lying down more than usual.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Signs of skin irritation.<\/span><\/li>\n<\/ul>\n<h2><b>Disinfection Frequency by Situation<\/b><\/h2>\n<figure id=\"attachment_19398\" aria-describedby=\"caption-attachment-19398\" style=\"width: 1075px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-19398\" src=\"https:\/\/www.vietstock.org\/wp-content\/uploads\/2026\/08\/istockphoto-2287970852-612x612-1.jpg\" alt=\"Worker spraying disinfectant in a cattle housing facility\" width=\"1085\" height=\"721\" srcset=\"https:\/\/www.vietstock.org\/wp-content\/uploads\/2026\/08\/istockphoto-2287970852-612x612-1.jpg 612w, https:\/\/www.vietstock.org\/wp-content\/uploads\/2026\/08\/istockphoto-2287970852-612x612-1-300x200.jpg 300w\" sizes=\"(max-width: 1085px) 100vw, 1085px\" \/><figcaption id=\"caption-attachment-19398\" class=\"wp-caption-text\">Disinfection frequency should be adjusted according to stocking density, housing conditions, traffic levels, and local disease risk.<\/figcaption><\/figure>\n<h3><b>Routine Frequency Under Normal Conditions<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Spraying frequency should be developed according to each farm\u2019s biosecurity plan. A fixed schedule should not be applied to every facility.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Factors that affect frequency include:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Animal species.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Stocking density.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Housing type.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Local disease situation.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Level of movement of people and vehicles.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Weather conditions.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Disease history.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Actual hygiene status.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Guidance from the veterinarian in charge of the farm.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Under normal conditions, some farms may spray disinfectants weekly or apply more frequent controls at high-risk points such as gates, main pathways, manure-handling areas, isolation areas, and vehicle areas.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Areas with high traffic usually need to be checked and cleaned more frequently than areas used less often. However, specific frequency should be adjusted according to guidance from the farm veterinarian and local veterinary authority.<\/span><\/p>\n<h3><b>Frequency and Concentration During Disease Events in the Herd or Nearby Area<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">When disease is detected in the herd or in nearby areas, farms need to strengthen disinfection at high-risk points under professional guidance. Farms should not independently set very frequent spraying schedules, increase concentrations, or expand treatment scope without appropriate guidance for the specific pathogen.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Areas that often need priority control include:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Entrance gates.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Main pathways.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Isolation areas.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Sick-animal handling areas.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Waste collection areas.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Vehicle access areas.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Shared tools.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Areas between housing rows.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">When disease is present or suspected:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Follow guidance from the veterinary authority or the veterinarian in charge.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Do not increase concentration beyond the label rate.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Do not mix multiple products together.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Strengthen control of people and vehicles.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Maintain intensified measures until the risk is considered resolved by professional assessment.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Keep full records of implementation.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">The disinfection log should record:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Date.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Time.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Area sprayed.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Product name.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Active ingredient group.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Concentration.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Solution volume.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Applicator.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Herd or flock condition after spraying.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Previous and next disinfection schedule.<\/span><\/li>\n<\/ul>\n<h3><b>Disinfection Schedule Before and After Each Production Cycle, During Downtime, and Before Restocking<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">The transition between production cycles is an important time for more thorough cleaning and disinfection compared with the production period.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">After depopulation:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Remove all manure and bedding.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Carry out mechanical cleaning.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Wash the housing area.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Allow surfaces to drain.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Disinfect according to the farm procedure.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Apply additional treatment if technical guidance requires it.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">During downtime:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Keep housing dry and well ventilated.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Limit access by people and vehicles.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Monitor hygiene conditions.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Retreat high-risk areas if needed.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Check feeders, fans, grids, floors, and drainage systems.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Before restocking:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Inspect the entire housing area.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Carry out the final disinfection spray if the procedure requires it.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Allow housing to dry and ventilate.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Check the source of incoming animals.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Prepare the isolation area.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Ensure feeders and drinkers are clean.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Ensure the ventilation system works properly.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">The number of sprays, interval between applications, downtime duration, and active ingredient rotation should follow the product label, farm conditions, and veterinary advice.<\/span><\/p>\n<h3><b>Adjusting Frequency by Disease Season and Stocking Density<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Disinfection frequency should not remain fixed throughout the year. Farms need to adjust frequency according to season, humidity, stocking density, and actual disease risk.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Factors to note include:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Cold and humid weather:<\/b><span style=\"font-weight: 400;\"> Some respiratory and digestive pathogens may survive longer in the environment. Cleaning and disinfection should be strengthened according to actual risk.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Hot season:<\/b><span style=\"font-weight: 400;\"> Some products may evaporate faster or surfaces may dry too quickly. Spraying time should be selected appropriately, often early morning or late afternoon if conditions allow.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>High humidity:<\/b><span style=\"font-weight: 400;\"> Surfaces dry more slowly and the effectiveness of some products may be affected.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>High stocking density:<\/b><span style=\"font-weight: 400;\"> Pathogen pressure is usually higher, so more attention should be paid to cleaning, ventilation, and access control.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Rainy season:<\/b><span style=\"font-weight: 400;\"> Outdoor areas, farm pathways, gates, and vehicle areas require attention because solution may be washed away or diluted.<\/span><\/li>\n<\/ul>\n<h2><b>Safety for Farmers and the Environment<\/b><\/h2>\n<figure id=\"attachment_19394\" aria-describedby=\"caption-attachment-19394\" style=\"width: 985px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-19394\" src=\"https:\/\/www.vietstock.org\/wp-content\/uploads\/2026\/08\/istockphoto-1982291542-612x612-1.jpg\" alt=\"Worker wearing protective equipment inspecting poultry feeding equipment during disinfection\" width=\"995\" height=\"663\" srcset=\"https:\/\/www.vietstock.org\/wp-content\/uploads\/2026\/08\/istockphoto-1982291542-612x612-1.jpg 612w, https:\/\/www.vietstock.org\/wp-content\/uploads\/2026\/08\/istockphoto-1982291542-612x612-1-300x200.jpg 300w\" sizes=\"(max-width: 995px) 100vw, 995px\" \/><figcaption id=\"caption-attachment-19394\" class=\"wp-caption-text\">Proper protective equipment helps reduce health risks from repeated exposure to disinfectants in livestock facilities.<\/figcaption><\/figure>\n<h3><b>Health Risks from Repeated Exposure to Disinfectants<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Repeated exposure to disinfectant chemicals, especially glutaraldehyde, high-concentration chlorine compounds, phenolics, or strong oxidizers, may create risks for applicators if proper protection is not used.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Possible symptoms include:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Respiratory irritation.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Skin irritation.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Eye irritation.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Coughing.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Sore throat.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Difficulty breathing.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Contact dermatitis.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Chemical sensitization after long-term exposure.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">People who spray frequently should:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Never skip protective equipment, even for short spraying sessions.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Check filter masks before use.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Replace gloves if torn.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Replace protective equipment periodically.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Avoid eating or drinking in the mixing area.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Avoid smoking while mixing or spraying chemicals.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Avoid touching the face while spraying.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Rinse immediately if chemicals splash onto the skin or into the eyes.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">If prolonged irritation symptoms occur:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Stop exposure.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Leave the spraying area.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Rinse the affected area with clean water.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">See a doctor if symptoms do not improve.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Consider changing the product, improving ventilation, or adjusting the protective procedure.<\/span><\/li>\n<\/ul>\n<h3><b>Personal Procedure After Spraying: Removing Protective Gear, Showering, and Handling Protective Clothing<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">After spraying is completed, protective equipment should be removed properly to avoid chemicals contacting the skin, eyes, or inner clothing.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Protective equipment may be removed in the following order:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Boots.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Protective clothing.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Gloves.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Goggles.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Mask or respirator.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">During removal, avoid touching the face, eyes, nose, or mouth.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Afterward, applicators should:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Wash hands with soap.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Wash the face.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Shower thoroughly.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Change clothes.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Wash reusable protective clothing separately.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Place disposable clothing in a sealed bag.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Avoid bringing dirty protective gear into living areas.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Avoid washing protective clothing together with everyday clothing.<\/span><\/li>\n<\/ul>\n<h3><b>Handling Leftover Solution, Packaging, and Wastewater After Disinfection<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Leftover diluted solution, packaging, and wastewater after disinfection should be handled carefully to reduce risks to the environment, water sources, and workers.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Key points include:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Do not discharge leftover diluted solution directly into ponds, canals, ditches, or domestic water sources.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Do not pour chemicals into wells or areas near water sources.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Collect wastewater into the farm\u2019s treatment system if available.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Collect bottles and packaging separately.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Do not reuse chemical containers for water, feed, or household items.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Do not burn or bury packaging arbitrarily.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Handle materials according to product label instructions and local regulations.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Consult veterinary or environmental authorities if the disposal method is unclear.<\/span><\/li>\n<\/ul>\n<h2><b>Common Mistakes When Spraying Disinfectants in Livestock Housing and How to Fix Them<\/b><\/h2>\n<figure id=\"attachment_19396\" aria-describedby=\"caption-attachment-19396\" style=\"width: 875px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-19396\" src=\"https:\/\/www.vietstock.org\/wp-content\/uploads\/2026\/08\/istockphoto-1250469708-612x612-1.jpg\" alt=\"Worker carrying a disinfectant sprayer at the entrance of a livestock facility\" width=\"885\" height=\"590\" srcset=\"https:\/\/www.vietstock.org\/wp-content\/uploads\/2026\/08\/istockphoto-1250469708-612x612-1.jpg 612w, https:\/\/www.vietstock.org\/wp-content\/uploads\/2026\/08\/istockphoto-1250469708-612x612-1-300x200.jpg 300w\" sizes=\"(max-width: 885px) 100vw, 885px\" \/><figcaption id=\"caption-attachment-19396\" class=\"wp-caption-text\">Skipping mechanical cleaning, using the wrong dilution, and spraying under unsuitable conditions can reduce disinfection effectiveness.<\/figcaption><\/figure>\n<h3><b>Skipping Mechanical Cleaning Before Spraying<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">This is the most common mistake and has the greatest impact on disinfection effectiveness. Organic matter on surfaces can neutralize active ingredients or prevent the product from directly contacting the area that needs treatment.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">How to fix it:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Always remove manure.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Remove bedding material.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Wash surfaces.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Clean feeders, drinkers, and drainage channels.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Allow surfaces to drain before spraying if the product label does not instruct otherwise.<\/span><\/li>\n<\/ul>\n<h3><b>Incorrect Dilution or Using the Wrong Product for the Target Pathogen<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">A solution that is too weak may not be effective. A solution that is too concentrated may cause waste, increase toxicity, irritate animals, and increase equipment corrosion risk.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Using the wrong active ingredient also reduces effectiveness. For example, some QAC products have limited efficacy against many non-enveloped viruses or spores, depending on product formulation and label claims.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">How to fix it:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Read the label carefully.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Use measuring tools.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Identify the target pathogen.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Do not increase concentration arbitrarily.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Do not use products outside their label scope.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Consult a veterinarian when unsure.<\/span><\/li>\n<\/ul>\n<h3><b>Missing Hidden Corners, Insufficient Surface Wetting, or Spraying in the Wrong Direction<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Spraying from outside to inside may increase the risk of carrying pathogens from dirty areas into treated areas. Missing hidden corners creates \u201cblind spots\u201d where pathogens may survive and cause recontamination.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">How to fix it:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Establish a fixed spraying route.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Start from inside and move outside.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Spray from top to bottom.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Mark areas that are easy to miss.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Recheck after spraying.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Apply additional spraying if dry areas remain.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Train applicators using the farm checklist.<\/span><\/li>\n<\/ul>\n<h3><b>Spraying Under Unsuitable Weather Conditions<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Weather conditions can affect spraying effectiveness, especially for outdoor areas or naturally ventilated housing.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Rain may:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Dilute the solution.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Wash away the product.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Reduce contact time.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Strong sunlight may:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Cause products to evaporate quickly.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Shorten contact time.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Increase heat stress risk if animals are present.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Very high humidity may:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Slow drying.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Affect certain active ingredient groups.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Increase the risk of standing solution in some areas.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">How to fix it:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Spray in the early morning or late afternoon if conditions allow.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Avoid spraying when it is raining.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Do not spray outdoor areas right before rain.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Check the weather forecast for pathways, farm gates, and outdoor yards.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Adjust ventilation after spraying based on actual conditions.<\/span><\/li>\n<\/ul>\n<h3><b>Using One Product for Too Long Without Evaluating Effectiveness<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Repeated use of one active ingredient over a long period without evaluating performance may make the disinfection program less suitable, especially when the target pathogen, organic matter load, cleaning procedure, or housing conditions have changed.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">However, active ingredient rotation should not be done arbitrarily. It should be based on technical reasoning and professional advice.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Evaluation should consider:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Target pathogen.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Farm conditions.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Product compatibility.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Disease history.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Hygiene results after spraying.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Technical plan.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Veterinary advice.<\/span><\/li>\n<\/ul>\n<h2><b>Practical Checklist for Livestock Housing Disinfection Spraying<\/b><\/h2>\n<h3><b>Before Spraying: Housing, Equipment, Product, Protective Gear, and Animal Arrangement<\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Mechanical cleaning has been completed: manure and bedding removed, feeders scrubbed, and drainage channels cleared.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Hidden corners, gaps, and standing-water points have been checked and marked.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Valves, nozzles, hoses, and spray tips have been checked.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Old chemical residue has been cleaned from the tank.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The correct product has been selected.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The expiry date has been checked.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The label has been read carefully.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The product has been diluted at the correct concentration using measuring tools.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Suitable clean water has been used.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Full protective gear is worn: mask or respirator, goggles, gloves, protective clothing, and boots.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Animals have been arranged according to requirements.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Ventilation has been set up according to the product label and actual conditions.<\/span><\/li>\n<\/ul>\n<h3><b>During Spraying: Route, Required Areas, Solution Volume, and Contact Time<\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Start from the innermost area and move toward the entrance.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Spray from top to bottom: ceiling \u2192 walls \u2192 floor \u2192 drainage channels.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Spray evenly in a zigzag pattern.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Do not miss hidden corners or areas under equipment.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Ensure surfaces are evenly wet.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Do not leave dry areas.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Do not spray so much that the solution runs off in streams.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Maintain the contact time stated on the product label.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Do not spray directly onto animals.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Do not stand against the wind or airflow carrying chemical vapors.<\/span><\/li>\n<\/ul>\n<h3><b>After Spraying: Ventilation, Inspection, Records, and Herd Monitoring<\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Increase ventilation after spraying.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Recheck easily missed areas.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Spray again if dry areas remain.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Do not introduce animals if housing has not met safe-use conditions stated on the label.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Remove protective equipment in the correct order.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Wash hands, shower, and change clothes.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Record date, time, product, concentration, area treated, and applicator.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Handle leftover solution according to regulations.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Collect packaging.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Monitor the herd or flock after spraying if animals are present, especially during the first few hours.<\/span><\/li>\n<\/ul>\n<h2><b>Frequently Asked Questions About Spraying Disinfectants in Livestock Housing<\/b><\/h2>\n<figure id=\"attachment_19400\" aria-describedby=\"caption-attachment-19400\" style=\"width: 1201px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-19400\" src=\"https:\/\/www.vietstock.org\/wp-content\/uploads\/2026\/08\/istockphoto-624053146-612x612-1.jpg\" alt=\"Clipboard, protective gloves, and spray bottle used for a livestock housing disinfection checklist\" width=\"1211\" height=\"807\" srcset=\"https:\/\/www.vietstock.org\/wp-content\/uploads\/2026\/08\/istockphoto-624053146-612x612-1.jpg 612w, https:\/\/www.vietstock.org\/wp-content\/uploads\/2026\/08\/istockphoto-624053146-612x612-1-300x200.jpg 300w\" sizes=\"(max-width: 1211px) 100vw, 1211px\" \/><figcaption id=\"caption-attachment-19400\" class=\"wp-caption-text\">A practical checklist helps farm workers confirm cleaning, dilution, spraying, ventilation, and post-treatment safety steps.<\/figcaption><\/figure>\n<h3><b>Does livestock housing need to be rinsed after disinfectant spraying?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">It should not be assumed that rinsing is always required or never required after spraying. Whether rinsing is needed depends on the product label, surface type, area of use, residue risk, and timing for animals to return.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">For feeders, drinkers, tools that directly contact feed or water, or surfaces that animals may lick, bite, or contact directly, rinse with clean water if the label requires it or if there is a chemical residue risk.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">For floors, walls, ceilings, and empty housing surfaces, they may be allowed to dry naturally if the product label allows it. Before animals return, make sure the housing is well ventilated, surfaces are relatively dry, and there is no strong chemical odor.<\/span><\/p>\n<h3><b>What should be noted when spraying disinfectants in housing areas where animals are present to avoid poisoning?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Spraying should only be carried out in areas with animals when the product label allows it and provides clear guidance on concentration, spraying method, ventilation, and safe-use time.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Key points include:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Only use products allowed by the label.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Use the correct concentration intended for occupied housing.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Choose a cool time of day if conditions allow.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Ensure proper ventilation.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Do not spray directly into animals\u2019 face, eyes, nose, mouth, or respiratory tract.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Do not spray so much that animals become excessively wet.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Do not use the dilution rate intended for empty housing.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Monitor animals after spraying.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Increase ventilation immediately if abnormal signs appear.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Contact a veterinarian if animals show difficulty breathing, watery eyes, coughing, loss of appetite, or signs of irritation.<\/span><\/li>\n<\/ul>\n<h3><b>What spraying frequency should be used during a disease event and after the disease is controlled?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">When disease is present or suspected, disinfection at high-risk areas should be intensified under guidance from the veterinary authority or the veterinarian in charge. Farms should not independently set a schedule of one to two sprays per day, increase concentrations, or expand the treatment scope without professional guidance for the specific pathogen.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">After the disease is controlled, the farm still needs to maintain intensified measures until the risk is considered resolved by a veterinarian and competent authority. The schedule can then be gradually adjusted back to routine frequency.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Frequency should not be reduced simply because no new cases have been observed. Adjustments should be based on the disease situation, herd or flock health, environmental hygiene, and professional recommendations.<\/span><\/p>\n<h3><b>Does using the same disinfectant long term reduce effectiveness, and is active ingredient rotation needed?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Repeated use of one active ingredient over a long period without evaluating effectiveness may make the disinfection program less suitable in some cases. This may result from changes in the target pathogen, remaining organic matter, incorrect dilution, insufficient contact time, biofilm, or changing housing conditions.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Active ingredient rotation may be considered, but it should:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Be based on technical reasoning.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Identify the target pathogen.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Check product compatibility.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Evaluate housing conditions.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Involve veterinary consultation.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Avoid mixing products unless clear guidance is available.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Active ingredient rotation does not replace mechanical cleaning, correct dilution, and adequate contact time.<\/span><\/p>\n<h3><b>After spraying empty housing, how long should the farm wait before restocking?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">There is no fixed waiting time that applies to every farm. Downtime depends on animal species, disease pressure, active ingredient group, ventilation conditions, moisture, housing dryness, and veterinary guidance.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Before restocking, make sure:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Housing is relatively dry or meets the farm procedure.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">There is no strong chemical odor.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Feeders and drinkers have been cleaned.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The ventilation system works normally.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The source of incoming animals has been checked.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The isolation area is ready.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The biosecurity procedure is fully prepared.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">If the previous herd or flock had an infectious disease or the area is under disease risk, consult a veterinarian or local veterinary authority before restocking.<\/span><\/p>\n<h1><b>Standardize Livestock-Housing Disinfection at VIETSTOCK 2026<\/b><\/h1>\n<p><span style=\"font-weight: 400;\">Effective disinfection requires control at every stage, from mechanical cleaning and chemical dilution to spraying coverage, contact time, ventilation, worker protection, and post-treatment records. On larger farms or facilities with several housing blocks, inconsistent manual practices can lead to missed surfaces, excessive chemical use, and difficulty evaluating whether the procedure has been completed correctly.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">At <\/span><b>VIETSTOCK 2026<\/b><span style=\"font-weight: 400;\">, livestock producers, farm managers, veterinary professionals, animal-health companies, and equipment providers can explore technologies that support safer and more consistent disinfection operations.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Visitors can:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Compare<\/b><span style=\"font-weight: 400;\"> hand sprayers, pressure sprayers, mobile spraying units, and automated systems for different farm scales.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Explore<\/b><span style=\"font-weight: 400;\"> dosing and mixing technologies that help control concentration and solution volume.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Discover<\/b><span style=\"font-weight: 400;\"> equipment designed to reach ceilings, cracks, drainage channels, areas under cages, and other difficult surfaces.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Access<\/b><span style=\"font-weight: 400;\"> personal protective equipment, ventilation-monitoring devices, and chemical-safety solutions.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Review<\/b><span style=\"font-weight: 400;\"> software and digital tools for scheduling, recording, and evaluating cleaning and disinfection activities.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Connect<\/b><span style=\"font-weight: 400;\"> with animal-health companies, equipment suppliers, and biosecurity specialists.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Expected to feature more than <\/span><b>300 brands<\/b><span style=\"font-weight: 400;\">, over <\/span><b>10,000 sqm of exhibition space<\/b><span style=\"font-weight: 400;\">, and <\/span><b>13,000 trade visitors<\/b><span style=\"font-weight: 400;\"> from more than <\/span><b>40 countries and territories<\/b><span style=\"font-weight: 400;\">, VIETSTOCK 2026 creates opportunities for farms and businesses to compare technologies and strengthen operational consistency across the livestock and animal-health value chain.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Alongside the exhibition and business-networking activities, <\/span><b>VIETSTOCK 2026<\/b><span style=\"font-weight: 400;\"> will also organize an <\/span><b>On-Farm Seminar Series<\/b><span style=\"font-weight: 400;\">, bringing practical knowledge on herd and flock management, disease prevention, biosecurity, and livestock-production efficiency to key livestock regions.<\/span><\/p>\n<p><b>Date:<\/b><span style=\"font-weight: 400;\"> 21\u201323 October 2026<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span> <b>Venue:<\/b><span style=\"font-weight: 400;\"> Saigon Exhibition and Convention Center \u2013 SECC, 799 Nguyen Van Linh Street, Tan My Ward, Ho Chi Minh City, Vietnam<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span> <b>Event website:<\/b><a href=\"https:\/\/www.vietstock.org\/en\/\"> <span style=\"font-weight: 400;\">https:\/\/www.vietstock.org\/en\/<\/span><\/a><\/p>\n<p><span style=\"font-weight: 400;\">\ud83d\udc49 <\/span><b>Register to visit VIETSTOCK 2026 and explore spraying, dosing, monitoring, and farm-biosecurity technologies:<\/b><b><br \/>\n<\/b><a href=\"https:\/\/www.vietstock.org\/en\/online-registration-2\/\"> <span style=\"font-weight: 400;\">https:\/\/www.vietstock.org\/en\/online-registration-2\/<\/span><\/a><\/p>\n<p><span style=\"font-weight: 400;\">\ud83d\udc49 <\/span><b>Learn more about the VIETSTOCK 2026 On-Farm Seminar Series:<\/b><b><br \/>\n<\/b><a href=\"https:\/\/www.vietstock.org\/en\/event-features\/vietstock-2026-livestock-roadshows-bringing-industry-knowledge-to-key-livestock-regions\/\"> <span style=\"font-weight: 400;\">https:\/\/www.vietstock.org\/en\/event-features\/vietstock-2026-livestock-roadshows-bringing-industry-knowledge-to-key-livestock-regions\/<\/span><\/a><\/p>\n<p><b>CONTACT INFORMATION:<\/b><\/p>\n<p><b>Exhibiting:<\/b><span style=\"font-weight: 400;\"> Ms. Sophie Nguyen \u2013 Sophie.nguyen@informa.com<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><b>Visitor Support:<\/b><span style=\"font-weight: 400;\"> Ms. Phuong \u2013 Phuong.C@informa.com<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><b>Marcom Support:<\/b><span style=\"font-weight: 400;\"> Ms. Anita Pham \u2013 Anita.pham@informa.com<\/span><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A practical guide to spraying disinfectants in livestock housing, covering mechanical cleaning, correct dilution, spraying techniques, contact time, frequency, ventilation, and worker safety.<\/p>\n","protected":false},"author":3,"featured_media":19407,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[45],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v15.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How to Spray Disinfectants in Livestock Housing<\/title>\n<meta name=\"description\" content=\"Learn how to spray disinfectants in livestock housing, including preparation, dilution, spraying routes, frequency, contact time, and safety.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.vietstock.org\/en\/industry-news\/how-to-spray-disinfectants-in-livestock-housing\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" 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