Winter Rodent Entry Points Every Homeowner Should Check
As temperatures drop across Kingston, Ottawa and the GTA, seemingly small, insignificant defects can become a major issue for homeowners. Mice only need a gap the size of a dime to enter—and cold weather drives them toward warm, sheltered areas inside your home. Identifying these winter rodent entry points early prevents mid-season infestations and protects your home from damage.
1. Foundation Gaps and Cracks
The most common winter rodent entry points are small cracks where siding meets the foundation. Over time, these openings widen due to freeze-thaw cycles, erosion and natural shifting.
Look for:
- Gaps or cracks along the bottom siding line
- Soil erosion exposing new openings
- Chew marks or disturbed insulation
If you can slide a pencil into the gap, a mouse can enter.
2. Utility Line Openings
Any area where utilities penetrate the exterior—cable lines, gas lines, AC lines, electrical conduits—can become open pathways when sealing materials break down.
Check for:
- Crumbling foam around pipes
- Small drafts of warm air escaping
- Holes larger than a dime
These are high-traffic rodent crossings during winter.
3. Loose Siding and Corner Trim
Vinyl siding and corner posts shift during harsh Ontario winters. When the siding pulls away from the house, mice slip behind it and gain access to wall voids.
Inspect for:
- Loose or lifted siding panels
- Warped corner trim
- Gaps where two siding panels meet
These hidden openings are often overlooked by homeowners.
4. Garage Doors and Exterior Door Sweeps
If you can see daylight under a door, rodents can enter. Worn weatherstripping and warped garage doors create ideal winter rodent entry points.
Check for:
- Cracked or flattened door sweeps
- Gaps at the bottom corners
- Weatherstripping that no longer seals tight
A small opening under a door is one of the easiest access points for mice.
How Porter Pest Control Can Help
If you’ve found potential winter rodent entry points—or you’ve noticed signs like droppings, scratching, or nesting material—our licensed technicians can help.
We provide:
- Full winter rodent inspections
- Entry-point sealing and exclusion work
- Safe, effective rodent removal
- Long-term prevention strategies
We serve homeowners across Kingston, Ottawa and the GTA, with fast response times and proven results.