As temperatures drop, mice, ants, spiders, and other pests start looking for a warm way indoors — and small gaps around your home are exactly what they’re looking for. The next few weeks, before the cold really sets in, are the best window to seal things up before an infestation starts rather than after.
Why fall is the critical window
Once pests move inside for the winter, they don’t leave until spring — and by then, a few mice or a small ant trail can turn into a much bigger problem. Acting now, while pests are still actively searching for entry points, is far easier (and cheaper) than treating an established infestation in January.
Your fall pest-proofing checklist
- Seal gaps around pipes, vents, and foundation cracks — a mouse only needs an opening the width of a pencil
- Check weatherstripping on doors and windows, especially basement and garage entries
- Trim back branches and shrubs touching the house — they’re a bridge for ants and spiders
- Store firewood away from the exterior walls, not stacked against them
- Clean up fallen fruit, birdseed, and pet food left outdoors overnight
When to call in help
If you’re already seeing droppings, ant trails, or webs building up despite doing the basics, it’s worth having someone take a closer look before winter. Mice and ants are the two most common fall invaders we see in Montreal homes, and catching them early makes all the difference.
Optima Extermination offers free inspections across Greater Montreal, with same-day service available. Book a free inspection or call (514) 458-0805 before the cold sets in.