Winter Intruders: Shut Out Rats, Mice & Squirrels Mid-Season

Abell Pest Control Why you should be mindful of the big three this winter

Rats. Mice. Squirrels. Mid-winter is when these pests push hardest for warmth, shelter, and food, and you may only notice them once they’re already active inside. Don’t wait and see. Check, seal, and act fast before a small entry point turns into a bigger problem.

 

The Big Three (and how little space they need)

  • Mice: ¼ in (6 mm) gap is enough
  • Rats: ¾ in (19 mm) gap is enough
  • Squirrels: 2½ in (64 mm) openings around rooflines/vents can do it

 

Where they’re getting in right now

Mice & rats: garages, basements, foundation cracks, gaps around pipes/wiring, under decks/along siding Squirrels: roof edges, soffits/vents, loose shingles, attic-line openings, branches touching the roof

 

Signs you shouldn’t ignore

  • Mice: rice-sized droppings, musty urine smell, scratching/gnawing at night
  • Rats: larger droppings, dark rub marks near entry points, skittering in walls/ceilings
  • Squirrels: daytime thumping in attic, torn insulation, chewing near vents/roofline

What works now

  • Seal properly:
    • Mice: copper mesh/bronze wool + sealant
    • Rats: steel wool + durable sealant
    • Squirrels: repair shingles, secure vents/soffits, reinforce roof gaps Tip: If you suspect squirrels are already inside, don’t seal them in.
  • Remove the “welcome mat”: airtight food storage, pet food put away, fix leaks, reduce clutter (especially cardboard)
  • Block roof routes: trim branches, check roof edges after storms, repair damage immediately

 

24–48-hour checklist

  • Walk the exterior for fresh gaps, droppings, gnawing, rub marks
  • Check garage door seals and corners
  • Inspect around utility lines (inside and out)
  • Listen: night activity (rodents), daytime attic noise (squirrels)
  • Secure food and pet food

 

Bottom line: If you’re hearing noises, seeing droppings, or spotting damage, it’s time to act, mid-winter pest pressure can escalate quickly.


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About the author:

Since 1924, Abell Pest Control has provided quality services, protecting our customers and their patrons from coast-to-coast. Our customers enjoy the expertise and resources of a national provider. Prouder yet, we are members of your community, ready to service your home or business 24/7.

We are reliable experts in pest control—experts who care. At Abell Pest Control, we bring experience, efficacy and knowledge to customers who are looking for a fast, safe and effective solution to their pest problem.

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