After an infestation of mice, rats or field mice, the contaminated surfaces and insulation harbour pathogens (hantavirus, leptospira, salmonella) that remain virulent for several months. Cleaning with soap and water is insufficient and can even spread contaminants by aerosol.
Nova Extermination performs this service on the South Shore of Montreal with professional equipment and documented reports. License RBQ 5734 75930 01.
When to use this service
- After an extermination in a frequented area (kitchen, inhabited basement, closet)
- If an odor persists more than 2 weeks after the rodents have been eliminated
- Before the sale or rental of a home
- When the damage has reached the insulation (attics, crawl spaces)
- For areas with young children or immunocompromised people
Our step-by-step method
- Visual evaluation and costing before any work begins
- Installation of polyethylene barriers to confine the area
- Full protective equipment for technicians (Tyvek, P100, nitrile gloves)
- Pre-moistening of the droppings (reduces the risk of aerosols)
- H13 HEPA suction (99.95 percent particle retention at 0.3 μm)
- Removal of contaminated insulation if required (double bagging, transport to an approved site)
- Spray of Broad-Spectrum Biocide Registered by Health Canada
- Enzymatic odor neutralization (elimination of the cause, not masking)
- Before/after photos and decontamination certificate
Typical duration: half day to day depending on the surface.
Underwriting and Inspection
Here are the service variants we offer for this need:
- Spot decontamination in the basement or shed
- Decontamination + attic insulation removal (up to 600 sq. ft.)
- Complete house decontamination with insulation replacement
- 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.
Services that are often combined with it
To deal with the problem in the long term, this service is frequently linked to:
- mouse extermination
- extermination of rats
- extermination of field mice
- Cellulose insulation after infestation
- decontamination
We mention it in the report when relevant, without commercial pressure: it’s up to you to choose if you want to go further.
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, followed by ventilation.
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 of the odor, not just masking. If the odor persists after 7 days, we schedule a follow-up according to your warranty.
Does home insurance cover decontamination?
Often yes, especially when a disaster is proven (damage attributed to rodents). We provide detailed report and invoice for the claim. Check your deductible before starting the work.
How long does decontamination take?
From 4 hours for a small basement to 2 or 3 full days for an attic with insulation replacement. The quote indicates the expected duration.
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 rodent decontamination contact form.
Nova Extermination, RBQ license 5734 75930 01. Service 7 days a week, including public holidays. Health Canada Licensed Products.
Frequently Asked Questions: Rodent Decontamination
What is decontamination after a rodent infestation?
Decontamination aims to clean and disinfect areas soiled by feces, urine and nests left by mice or rats, once the infestation has been controlled. It includes the safe removal of droppings and debris, the disinfection of surfaces and sometimes the replacement of contaminated insulation in attics and crawl spaces. In Longueuil and Saint-Hubert, this service complements rodent elimination.
Why not just clean up rodent droppings myself?
Rodent droppings and urine can contain pathogens, and sweeping or vacuuming carelessly risks suspending contaminated particles that are dangerous to inhale. Professional decontamination uses appropriate methods and protective equipment to limit the risks. This is especially important in confined spaces like attics and basements.
What risks do rodent nests and droppings leave in the house?
Beyond pathogens, feces and urine give off strong odors that can linger and attract new rodents to the same areas. Nests and soiled insulation also affect the sanitation and sometimes effectiveness of insulation. Proper decontamination sanitizes the premises and reduces these inconveniences.
How does a decontamination intervention work?
After ensuring that the rodents are controlled, our technician removes the droppings and soiled materials, disinfects the surfaces with approved products and, if necessary, treats odours. Depending on the extent, the contaminated insulation may need to be replaced. We adapt the intervention to the state of the premises observed during the inspection.
How much does rodent decontamination cost?
The price is established on the basis of an evaluation, depending on the extent of the contaminated surfaces, the presence of insulation to be replaced and the accessibility of the affected areas. Each situation is different, so an inspection is necessary before setting a rate. The amount is communicated to you before the work, our services being paid.
Does decontamination prevent rodents from returning?
Decontamination sanitizes and deodorizes the premises, which reduces the signals that attract new rodents, but it must be accompanied by access control to avoid reinfestation. We talk about sustainable outcomes evaluated on a case-by-case basis and often recommend sealing entry points. Our technician will advise you on the preventive measures to be put in place.