As the temperatures drop in Minnesota and Wisconsin, insects and rodents start looking for warm shelter. Your property provides the perfect refuge from freezing weather. Taking action in the autumn is the most effective way to keep these intruders outdoors.
By sealing your home properly before the first frost, you block entry points and protect your property from costly damage and health risks. Wildlife and insects exploit vulnerable areas in your architecture to build nests, scavenge for food, and multiply out of sight.
Identifying Common Seasonal Intruders
As autumn arrives, several specific intruders become highly active.
Rodents like mice do not hibernate and will constantly forage for food. When their outdoor food supplies run out, they seek out the warmth of indoor spaces. Once indoors, mouse populations expand rapidly because females can reproduce every three weeks. Other common fall pests include boxelder bugs, which are attracted to buildings with significant southern or western sun exposure. Spiders and Asian lady beetles also seek wall voids and quiet corners to survive the freezing temperatures.
Recognizing what you are up against helps you target your exclusion efforts effectively.
Inspecting and Sealing Cracks in the Foundation
A thorough exterior inspection is your first line of defense in pest-proofing house structures. You must physically block the routes these creatures take to get inside your walls.
- Mice can squeeze through gaps as small as a dime, or roughly a quarter of an inch.
- Freeze-thaw cycles can widen existing cracks in your foundation over time.
- Search for openings around ground-level windows, basement sills, and utility line entrances.
- When sealing cracks, pack holes tightly with copper mesh instead of steel wool, as steel will eventually rust.
- Cover the mesh with weather-resistant sealant or firestop material to create a permanent barrier.
- Do not rely on expanding foam alone, as rodents will easily chew right through it and use the scraps for nesting material.
Securing Doors, Windows, and Vents
Even the smallest gap around an entryway provides an open invitation for wildlife and insects. Taking time to repair these components blocks cold drafts and keeps pests outside.
- Install weather stripping and tight-fitting door sweeps on all exterior doors.
- Check your garage door and replace the bottom rubber seal if it shows signs of wear.
- Repair or replace any damaged window screens before the end of August to stop fall invaders.
- Inspect points where air conditioning lines, gas pipes, and cable wires enter the building.
- Cover attic and foundation vents with sturdy, quarter-inch hardware cloth to block rodents without restricting necessary airflow.
Clearing Debris Around the Perimeter
Landscaping plays a massive role in your overall exclusion strategy. Overgrown vegetation and yard waste create hiding spots for small animals right next to your foundation.
Mice are skilled climbers and will use overgrown branches to access your roofline. Keep shrubs and bushes trimmed away from your exterior walls.
Move firewood, compost piles, and excess mulch at least twenty feet away from the structure.
Eliminate standing water by fixing leaky outdoor faucets and directing downspouts away from the house.
By removing these natural shelters and moisture sources, you make the journey to your exterior walls far less appealing for any foraging rodents or crawling insects.
Professional Help for Winter Prep
Sealing your home thoroughly takes time and attention to detail. If you find signs of an existing infestation or want professional help securing your property, reach out to a licensed expert. Paffy’s Pest Control offers comprehensive residential pest control services, including a reliable Three-Season Home Service Plan that keeps your property protected during the spring, summer, and fall.
Let our experienced technicians help you secure your space against unwanted guests.