{"id":32771,"date":"2026-05-19T17:28:57","date_gmt":"2026-05-19T21:28:57","guid":{"rendered":"https:\/\/www.novaextermination.com\/prevention\/bat-decontamination\/"},"modified":"2026-07-20T12:32:20","modified_gmt":"2026-07-20T16:32:20","slug":"bat-decontamination","status":"publish","type":"prevention","link":"https:\/\/www.novaextermination.com\/en\/prevention\/bat-decontamination\/","title":{"rendered":"Bat decontamination"},"content":{"rendered":"\n<!--NOVA_RATING_START--><div class=\"nova-rating-src\" hidden=\"\"><a href=\"https:\/\/search.google.com\/local\/reviews?placeid=ChIJrwH6caP-yEwR6PfHI875QhI\" target=\"_blank\" rel=\"noopener nofollow\" class=\"nova-rating-link\"><span class=\"rstars\">\u2605\u2605\u2605\u2605\u2605<\/span><span class=\"rtext\">4.9\/5 \u2022 203 Google reviews<\/span><\/a><\/div><style>.nova-rating-hero<span>text-align:center;margin:12px auto 4px;position:relative;z-index:3.nova-rating-hero .nova-rating-link<span>text-decoration:none;display:inline-block.nova-rating-hero .rstars<span>font-size:27px;letter-spacing:4px;line-height:1;filter:drop-shadow(0 1px 3px rgba(0,0,0,.5)).nova-rating-hero .rstars,.nova-hero-live .nova-rating-hero .rstars<span>color:#FBBC05!important.nova-rating-hero .rtext<span>display:block;color:#fff;font-weight:700;font-size:16px;margin-top:5px;text-shadow:0 1px 5px rgba(0,0,0,.6)<\/style><script>(function(){var S=document.querySelectorAll('.nova-rating-src');var node=S[S.length-1];if(!node)return;function init()<span>if(node.__rdone)return;var h1=document.querySelector('h1');if(!h1)return;node.__rdone=1;var b=document.createElement('div');b.className='nova-rating-hero';b.innerHTML=node.innerHTML;var anchor=h1.closest('.elementor-widget')||h1;anchor.parentNode.insertBefore(b,anchor.nextSibling);if(document.readyState!=='loading')init();else document.addEventListener('DOMContentLoaded',init);window.addEventListener('load',init);})();<\/script><script type=\"application\/ld+json\">{\"@context\": \"https:\/\/schema.org\/\", \"@type\": \"Product\", \"name\": \"D\u00e9contamination chauve-souris\", \"description\": \"Service d'extermination : D\u00e9contamination chauve-souris. Nova Extermination, exterminateur certifie sur la Rive-Sud de Montreal et en Monteregie.\", \"brand\": <span>\"@type\": \"Brand\", \"name\": \"Nova Extermination\", \"aggregateRating\": <span>\"@type\": \"AggregateRating\", \"ratingValue\": \"4.9\", \"reviewCount\": \"203\", \"bestRating\": \"5\", \"worstRating\": \"1\"<\/script><!--NOVA_RATING_END-->\n<p>When a wild animal or rodents have occupied an attic, crawl space or room, the contaminated surfaces and insulation harbor pathogens that remain virulent for several months. Cleaning with soap and water is insufficient and can even spread contaminants by aerosol. Professional decontamination eliminates the biological cause before it becomes a health problem.  <\/p>\n<p>Nova Extermination carries out certified decontamination on the South Shore, with professional equipment and biocides approved by Health Canada. License RBQ 5734 75930 01. <\/p>\n<p><strong>Areas concerned:<\/strong> attic (guano areas), attic, soffits, sometimes wall cavities.<\/p>\n<h2>What pathogens are present and why it matters<\/h2>\n<p>Histoplasmosis (fungus in guano that causes lung infection), rabies (rare but serious), external parasites (fleas, mites).<\/p>\n<p>These pathogens remain dangerous long after the animals have left: hantaviruses survive for several days in aerosols, leptospires for weeks in a humid environment, roundworm eggs for months. Particularly at risk: young children, the elderly, immunocompromised, pregnant women. Professional decontamination eliminates these vectors and certifies a return to a healthy environment.  <\/p>\n<h2>Our decontamination protocol<\/h2>\n<p>mandatory intervention after the breeding season (August-September) to respect the status of sensitive species of bats, removal of guano by HEPA suction, disinfection with buffered formaldehyde or equivalent, prolonged ventilation, closure by 6 mm mesh of entry points.<\/p>\n<h3>Equipment used<\/h3>\n<ul>\n<li>H13 class HEPA industrial vacuum cleaner (99.95 percent particle retention at 0.3 \u03bcm)<\/li>\n<li>Broad-spectrum biocides registered by Health Canada (Virkon, stabilized peroxide, rotating quaternary ammoniums)<\/li>\n<li>Full personal protective equipment (Tyvek suit, P100 half mask, nitrile gloves)<\/li>\n<li>Enzymatic odor neutralization (eliminates cause, not mask)<\/li>\n<li>Document camera for before\/after photos (belayer)<\/li>\n<\/ul>\n<p><strong>Duration:<\/strong> half day to day.<\/p>\n<h2>Underwriting and Inspection<\/h2>\n<p>Here are the service variants we offer for this need:<\/p>\n<ul>\n<li>Spot decontamination (basement, shed, crawl space)<\/li>\n<li>Attic up to 600 sq. ft. with insulation setback<\/li>\n<li>Complete house after massive infestation<\/li>\n<li>Commercial decontamination (restaurant, warehouse)<\/li>\n<\/ul>\n<h3>What influences the quote<\/h3>\n<ul>\n<li>Surface or volume to be treated<\/li>\n<li>Extent of the infestation or situation<\/li>\n<li>Accessibility of the areas concerned<\/li>\n<li>Response time requested (planned or emergency)<\/li>\n<li>Scope of the desired warranty<\/li>\n<li>Documentation required for insurer, notary or audit<\/li>\n<\/ul>\n<p>The inspection is <strong>non-binding<\/strong>. We evaluate on site (or by phone as the case may be) and give you a written estimate adapted to your building before any work begins. No unpleasant surprises at the end.  <\/p>\n<h2>Recommended next steps<\/h2>\n<p>Decontamination corrects the consequences of an infestation. To prevent it from happening again, several related services should be considered: <\/p>\n<ul>\n<li><a href=\"https:\/\/www.novaextermination.com\/en\/animals\/bats-extermination\/\">Capturing bats<\/a><\/li>\n<li><a href=\"https:\/\/www.novaextermination.com\/en\/decontamination\/\">decontamination<\/a><\/li>\n<li><a href=\"\/fermeture-points-entree-animaux\/\">Closure of animal entry points<\/a><\/li>\n<li><a href=\"\/decontamination-grenier\/\">Complete attic decontamination<\/a><\/li>\n<\/ul>\n<h2>Home insurance coverage<\/h2>\n<p>Many home insurance policies cover decontamination when a loss is proven (animal infestation, biological damage). We make it easy to make the claim by providing: <\/p>\n<ul>\n<li>Detailed evaluation report with before\/after photos<\/li>\n<li>Precise identification of target species and pathogens<\/li>\n<li>Detailed invoice with batches of biocides used<\/li>\n<li>Signed decontamination certificate<\/li>\n<\/ul>\n<p>Practical advice: call your insurer BEFORE starting the work. Check your deductible and get a claim number. This speeds up the repayment.  <\/p>\n<h2>Questions<\/h2>\n<h3>Should the house be evacuated during decontamination?<\/h3>\n<p>For an intervention in an attic or crawl space, generally not. For decontamination in the living room, eviction of 4 to 8 hours after application of the biocide is recommended. <\/p>\n<h3>Will the smell really disappear?<\/h3>\n<p>Yes 95 percent of the time, as long as all contaminated insulation is removed. Enzyme treatment neutralizes the biological cause. If the odor persists after 7 days, we schedule a follow-up according to your warranty.  <\/p>\n<h3>Do I have to replace all the insulation every time?<\/h3>\n<p>Not systematically. It depends on the volume and depth of the contamination. Our report clearly indicates whether replacement is required.  <\/p>\n<h3>How long does it take between the call and the intervention?<\/h3>\n<p>5 business days on average. For urgent cases (unbearable smell, presence of children or animals at risk), 48 to 72 hours. <\/p>\n<h3>How long does the effect of disinfection last?<\/h3>\n<p>Indefinitely, as long as no new infestation contaminates the area. For this reason, we consistently recommend that entry points be closed after decontamination. <\/p>\n<h2>Contact Nova Extermination<\/h2>\n<p>Inspection within 24 hours, quick intervention. Intervention the next day. Coverage assessed on a case-by-case basis, depending on the condition of the building. Call <strong>514 666 6682<\/strong> or fill out the contact form for bat decontamination.   <\/p>\n<p><small>Nova Extermination, RBQ license 5734 75930 01. Service 7 days a week, including public holidays. Health Canada Licensed Products.  <\/small><\/p>\n\n<!--NOVA_FAQ_START--><style>.nova-faq<span>max-width:900px;margin:44px auto;padding:0 16px;font-family:'Inter',sans-serif.nova-faq__title<span>font-family:'Montserrat',sans-serif;font-size:28px;font-weight:700;color:#BF1E2E;text-align:center;margin:0 0 26px.nova-faq__item<span>border:1px solid #ececec;border-radius:10px;margin-bottom:12px;background:#fff;box-shadow:0 2px 8px rgba(0,0,0,.04);overflow:hidden.nova-faq__item[open]<span>box-shadow:0 6px 18px rgba(0,0,0,.09).nova-faq__q<span>font-family:'Montserrat',sans-serif;font-weight:600;font-size:17px;color:#1a1a1a;padding:18px 52px 18px 20px;cursor:pointer;list-style:none;position:relative.nova-faq__q::-webkit-details-marker<span>display:none.nova-faq__q::after<span>content:'+';position:absolute;right:20px;top:50%;transform:translateY(-50%);font-size:26px;line-height:1;color:#BF1E2E;font-weight:400;transition:transform .2s.nova-faq__item[open] .nova-faq__q::after<span>content:'\\2212'.nova-faq__a<span>padding:2px 20px 20px;color:#444;font-size:16px;line-height:1.65.nova-faq__a p<span>margin:0\/* remplace la FAQ generique du gabarit sur les pages de service *\/.elementor-element-a5f60a6<span>display:none!important<\/style><section class=\"nova-faq\" aria-label=\"Foire aux questions\"><h2 class=\"nova-faq__title\">Frequently Asked Questions: Bat Decontamination<\/h2><details class=\"nova-faq__item\"><summary class=\"nova-faq__q\">What is bat decontamination?<\/summary><div class=\"nova-faq__a\"><p>This service involves the safe removal of bat guano (droppings) from attics, attics and partitions, followed by surface disinfection. Because bats are protected, exclusion and clean-up must be within the permitted times and methods. Our technicians work according to the rules in effect on the South Shore and in Mont\u00e9r\u00e9gie.  <\/p><\/div><\/details><details class=\"nova-faq__item\"><summary class=\"nova-faq__q\">Why is bat guano dangerous?<\/summary><div class=\"nova-faq__a\"><p>Guano can harbor the fungus that causes histoplasmosis, a respiratory infection that is transmitted through the inhalation of spores. It also attracts insects and gives off a lingering odour as it accumulates. Our technicians remove it with respiratory protection equipment that complies with CNESST standards.  <\/p><\/div><\/details><details class=\"nova-faq__item\"><summary class=\"nova-faq__q\">When can bats be excluded?<\/summary><div class=\"nova-faq__a\"><p>The exclusion must take into account the calving period, during which the young cannot steal and must not be imprisoned. Interventions are therefore planned at the appropriate times of the year, then decontaminated and sealed the accesses. This approach respects the regulations surrounding these protected animals.  <\/p><\/div><\/details><details class=\"nova-faq__item\"><summary class=\"nova-faq__q\">How do you keep bats from coming back?<\/summary><div class=\"nova-faq__a\"><p>After cleaning the guano, we install one-way exclusion devices that let the bats out without letting them return. Once the building is vacated, we seal cracks, vents and soffit openings in Beloeil or Chambly. This complete seal aims for a lasting result on a case-by-case basis.  <\/p><\/div><\/details><details class=\"nova-faq__item\"><summary class=\"nova-faq__q\">Do you offer a guarantee against the return of bats?<\/summary><div class=\"nova-faq__a\"><p>We aim for sustainable results evaluated on a building-by-building basis, without an absolute guarantee that there will be no bats. An older building with multiple cracks may be more difficult to fully seal, which is a matter of maintenance. Our technicians will tell you what needs to be corrected.  <\/p><\/div><\/details><details class=\"nova-faq__item\"><summary class=\"nova-faq__q\">What is the cost of guano decontamination?<\/summary><div class=\"nova-faq__a\"><p>The price is established on the basis of an evaluation, depending on the volume of guano, the surface to be remediated and the complexity of the exclusion. An inspection in Saint-Hubert or elsewhere on the South Shore allows for a fair estimate. It is a paid service entrusted to certified technicians.  <\/p><\/div><\/details><\/section><script type=\"application\/ld+json\">{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"En quoi consiste la d\u00e9contamination li\u00e9e aux chauves-souris?\", \"acceptedAnswer\": <span>\"@type\": \"Answer\", \"text\": \"Ce service vise le retrait s\u00e9curitaire du guano (excr\u00e9ments) de chauves-souris accumul\u00e9 dans les greniers, entretoits et cloisons, suivi d'une d\u00e9sinfection des surfaces. Comme les chauves-souris sont prot\u00e9g\u00e9es, l'exclusion et le nettoyage doivent respecter les p\u00e9riodes et m\u00e9thodes permises. Nos techniciens interviennent selon les r\u00e8gles en vigueur sur la Rive-Sud et en Mont\u00e9r\u00e9gie.\", {\"@type\": \"Question\", \"name\": \"Pourquoi le guano de chauve-souris est-il dangereux?\", \"acceptedAnswer\": <span>\"@type\": \"Answer\", \"text\": \"Le guano peut abriter le champignon responsable de l'histoplasmose, une infection respiratoire qui se transmet par l'inhalation de spores. Il attire aussi des insectes et d\u00e9gage une odeur persistante en s'accumulant. Nos techniciens le retirent avec un \u00e9quipement de protection respiratoire conforme aux normes de la CNESST.\", {\"@type\": \"Question\", \"name\": \"Quand peut-on proc\u00e9der \u00e0 l'exclusion des chauves-souris?\", \"acceptedAnswer\": <span>\"@type\": \"Answer\", \"text\": \"L'exclusion doit tenir compte de la p\u00e9riode de mise bas, durant laquelle les jeunes ne peuvent voler et ne doivent pas \u00eatre emprisonn\u00e9s. On planifie donc les interventions aux moments appropri\u00e9s de l'ann\u00e9e, puis on d\u00e9contamine et scelle les acc\u00e8s. Cette approche respecte la r\u00e9glementation entourant ces animaux prot\u00e9g\u00e9s.\", {\"@type\": \"Question\", \"name\": \"Comment \u00e9vitez-vous que les chauves-souris reviennent?\", \"acceptedAnswer\": <span>\"@type\": \"Answer\", \"text\": \"Apr\u00e8s le nettoyage du guano, nous posons des dispositifs d'exclusion unidirectionnels qui laissent sortir les chauves-souris sans les laisser revenir. Une fois le b\u00e2timent lib\u00e9r\u00e9, nous scellons les fissures, \u00e9vents et ouvertures de soffite \u00e0 Beloeil ou Chambly. Ce scellement complet vise un r\u00e9sultat durable au cas par cas.\", {\"@type\": \"Question\", \"name\": \"Offrez-vous une garantie contre le retour des chauves-souris?\", \"acceptedAnswer\": <span>\"@type\": \"Answer\", \"text\": \"Nous visons des r\u00e9sultats durables \u00e9valu\u00e9s selon chaque b\u00e2timent, sans garantir de fa\u00e7on absolue l'absence de chauves-souris. Un b\u00e2timent \u00e2g\u00e9 comportant de multiples fissures peut \u00eatre plus difficile \u00e0 sceller enti\u00e8rement, ce qui rel\u00e8ve de son entretien. Nos techniciens vous indiquent les points \u00e0 corriger.\", {\"@type\": \"Question\", \"name\": \"Quel est le co\u00fbt d'une d\u00e9contamination de guano?\", \"acceptedAnswer\": <span>\"@type\": \"Answer\", \"text\": \"Le prix est \u00e9tabli sur \u00e9valuation, selon le volume de guano, la surface \u00e0 assainir et la complexit\u00e9 de l'exclusion. Une inspection \u00e0 Saint-Hubert ou ailleurs sur la Rive-Sud permet une estimation juste. C'est un service payant confi\u00e9 \u00e0 des techniciens certifi\u00e9s.\"]}<\/script><!--NOVA_FAQ_END-->\n","protected":false},"excerpt":{"rendered":"<p>Decontamination of bat guano areas (attic, attic). 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