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.
Nova Extermination carries out certified decontamination on the South Shore, with professional equipment and biocides approved by Health Canada. License RBQ 5734 75930 01.
Areas concerned: any area that has been treated with an infestation (rodents, insects, animals), before or after caulking and reconstruction work.
What pathogens are present and why it matters
Residual pathogens (bacteria, viruses, fungi), allergens (dust mites, insect debris), persistent odours, cross-contamination to the rest of the habitat.
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.
Our decontamination protocol
initial cleaning of surfaces, application of Health Canada approved broad-spectrum disinfectant by ultra-low volume spray or nebulization, contact time respected, ventilation and drying, control measures to verify effectiveness.
Equipment used
- H13 class HEPA industrial vacuum cleaner (99.95 percent particle retention at 0.3 μm)
- Broad-spectrum biocides registered by Health Canada (Virkon, stabilized peroxide, rotating quaternary ammoniums)
- Full personal protective equipment (Tyvek suit, P100 half mask, nitrile gloves)
- Enzymatic odor neutralization (eliminates cause, not mask)
- Document camera for before/after photos (belayer)
Duration: 1 to 4 hours depending on the surface.
Underwriting and Inspection
Here are the service variants we offer for this need:
- Spot decontamination (basement, shed, crawl space)
- Attic up to 600 sq. ft. with insulation setback
- Complete house after massive infestation
- Commercial decontamination (restaurant, warehouse)
What influences the quote
- Surface or volume to be treated
- Extent of the infestation or situation
- Accessibility of the areas concerned
- Response time requested (planned or emergency)
- Scope of the desired warranty
- Documentation required for insurer, notary or audit
The inspection is non-binding. 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.
Recommended next steps
Decontamination corrects the consequences of an infestation. To prevent it from happening again, several related services should be considered:
- decontamination
- Pest prevention
- Bed bug extermination
- cockroach extermination
- Decontamination after rodents
Home insurance coverage
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:
- Detailed evaluation report with before/after photos
- Precise identification of target species and pathogens
- Detailed invoice with batches of biocides used
- Signed decontamination certificate
Practical advice: call your insurer BEFORE starting the work. Check your deductible and get a claim number. This speeds up the repayment.
Questions
Should the house be evacuated during decontamination?
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.
Will the smell really disappear?
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.
Do I have to replace all the insulation every time?
Not systematically. It depends on the volume and depth of the contamination. Our report clearly indicates whether replacement is required.
How long does it take between the call and the intervention?
5 business days on average. For urgent cases (unbearable smell, presence of children or animals at risk), 48 to 72 hours.
How long does the effect of disinfection last?
Indefinitely, as long as no new infestation contaminates the area. For this reason, we consistently recommend that entry points be closed after decontamination.
Contact Nova Extermination
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 514 666 6682 or fill out the contact form for disinfection after infestation.
Nova Extermination, RBQ license 5734 75930 01. Service 7 days a week, including public holidays. Health Canada Licensed Products.
Frequently Asked Questions: Post-Infestation Disinfection
What is the post-infestation disinfection offered on the South Shore of Montreal?
Post-infestation disinfection aims to eliminate bacteria, viruses and allergens left behind by rodents or insects once the infestation is controlled. Our technicians apply approved disinfectants to contaminated surfaces, soiled insulation and nesting areas in both Longueuil and Brossard. The objective is to sanitize the premises and reduce the health risks for the occupants.
When should I use this service after an extermination?
Disinfection is done once the infestation is under control and the source of pests is eliminated, otherwise contamination would return. This is especially recommended after an infestation of mice, cockroaches or bedbugs in a home or business in Montérégie. This allows us to start again on healthy surfaces before returning to the premises.
What products and processes do you use to disinfect?
We use approved disinfectants adapted to the type of contaminant, applied by spraying or misting depending on the surface. Our technicians wear the required protective equipment and comply with CNESST standards during the intervention. Overly soiled materials, such as some insulation, may need to be removed prior to application.
Does disinfection eliminate odours and allergens?
The treatment significantly reduces odours from excrement, urine and carcasses, as well as airborne allergens. Depending on the extent of the contamination, a removal of soiled materials may be added for an optimal result. Each situation is evaluated on a case-by-case basis to target the areas to be treated.
Do you offer a guarantee on disinfection?
We aim for sustainable results evaluated on a case-by-case basis, but we do not promise guarantees on all our treatments. We do not take care of the insalubrity or persistent dilapidation of a building; The maintenance of the premises remains the responsibility of the owner. Our technicians will advise you on the measures to be maintained after our visit.
How much does disinfection cost after infestation?
The price is established on the basis of an evaluation, depending on the scope of the work, the surface to be treated and the degree of contamination. An on-site inspection in Saint-Hubert or elsewhere on the South Shore allows us to provide you with a fair estimate. This is a paid service performed by certified technicians.