A garage door that no longer seals, a bag of birdseed beside the freezer, an opening around a pipe: rodent prevention often starts with ordinary maintenance. Before winter, give those small details a place on your to-do list.
This fall rodent-prevention checklist helps Canadian homeowners turn a quick inspection into a practical action plan: find access points, reduce food and shelter, respond to activity, and choose equipment that suits the situation.
1. Inspect the places you usually walk past
Start outside, then check the garage and basement. Mice can fit through an opening approximately 6 mm wide, so a gap does not need to look dramatic to matter. The CDC’s rodent-exclusion guide highlights doors, utility openings, foundations and roof areas as inspection points.
- Garage and exterior doors: look for worn seals and visible gaps at the bottom and corners.
- Utility penetrations: examine the space around plumbing, cables and other services.
- Foundation and basement: look for cracks and openings where building materials meet.
- Vents and roof edges: inspect damaged covers, soffits and accessible openings from a safe position.
Use durable, appropriate repairs, such as metal mesh, flashing or suitable masonry repairs. For small openings, metal wool secured with sealant can help. Do not obstruct required ventilation or drainage; ask a qualified tradesperson about repairs around mechanical equipment.
Make the inspection useful: photograph each issue, name its location and assign the repair. “Gap beside the garage’s left corner” is easier to act on than “check the garage.”
2. Remove the easy meals and hiding places
Store dry food and pet food in closed, durable containers. Secure garbage lids, clean up spills, repair leaks and clear unnecessary clutter. Keep firewood raised and away from the house. These measures support the prevention approach described in Health Canada’s rats and mice guidance.
Give each storage area a clear owner. A household plan works better when someone is responsible for checking the birdseed bin and someone else checks the garage door seal.
3. Respond to signs of activity
Gnawed packaging, droppings and scratching sounds can indicate rodent activity. Record where you find evidence. Choose traps sized for the target rodent, follow the manufacturer’s placement instructions and check them daily. Health Canada identifies properly positioned snap traps and electronic traps as effective physical controls.
Keep traps inaccessible to children and pets. If activity continues, involve a qualified pest-management professional and bring your location notes and photos to the discussion.
4. Understand traps, bait stations and rodenticides
These terms describe different things. A trap captures or kills the target animal. A bait station is a protective housing used to control access to bait. A rodenticide is a pesticide. Buying a station does not, by itself, determine which pesticide you may purchase or where you may use it.
For commercial rodenticide baits, choose a station that meets the product label’s requirements for the intended placement and exposure to children, pets, livestock and wildlife. Outdoor suitability also matters. Health Canada’s bait-station requirements explain the differences. A protective station reduces access; it does not make poison harmless.
When comparing equipment, review the traps and bait stations collection and read each item’s specifications. Check what is included and whether the equipment suits the rodent and location you have identified.
5. Check the exact label before choosing a pesticide
Health Canada recommends physical control methods first. If a rodenticide is needed, verify its Canadian Pest Control Product registration number and read the complete label before purchase. Confirm the target pest, permitted location, product class, application directions and protective equipment. Store pesticides in their original containers, away from food and out of reach of children and pets. Follow disposal instructions. See Health Canada’s pesticide-use guidance.
For Québec customers: purchase and use requirements depend on the product and activity. Required documents must be provided at purchase. Check the Québec government’s pesticide-sales rules and applicable permit or certificate requirements before ordering. An online listing does not establish your eligibility.
6. Clean contamination without stirring up dust
Do not sweep or vacuum dry rodent droppings. Ventilate enclosed buildings before cleaning, leave during ventilation, and wear rubber or plastic gloves. Wet contamination thoroughly with an appropriate disinfectant and respect its contact time before wiping it up. Wash your hands after removing gloves.
Heavy infestations and contaminated ventilation systems require additional precautions and professional assistance. Use the CDC’s detailed rodent-cleanup instructions for the specific space and material.
Your before-winter action checklist
Use this suggested schedule to organise the work; it is not a promised elimination timeline.
- First inspection: record entry points and signs of activity. List repairs and missing equipment.
- Next action: assign each repair, confirm materials and set a completion date.
- During active control: check traps daily, record results and follow all product-specific servicing instructions.
- Weekly review: revisit unfinished repairs and compare observations by location. Escalate persistent activity.
- Before snow: photograph completed exterior repairs so you have a reference for spring maintenance.
Need help locating product information? Email info@rodenticidecanada.com with your province, the type of property, the rodent you suspect and the product you are considering. Ask for the relevant label and equipment details before choosing.
Prepared October 9, 2026. General prevention guidance; the current product label and applicable local requirements govern pesticide use.
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How to Choose the Right Rodenticide for Canadian Homes, Farms, and Food Facilities