How to Pest-Proof Your Home This Winter


January 11, 2019

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By Maridel Reyes

In summer, work is done to keep annoying insects out of the house, but winter can be even more of a challenge because some of the creatures trying to get in are bigger and harder to drive out.

“Mice, rats, raccoons, squirrels, cockroaches, and ants will try to seek food and shelter inside homes as the temperature drops,” says Jamie Nichols, senior service center manager of Arrow Exterminators in Atlanta. These critters can cause damage to the home as well as spread bacteria. Also, some, like raccoons and squirrels, can be difficult—and expensive—to get rid of as they require a professional exterminator.

Fortunately, some careful planning can help keep these creatures outdoors where they belong. Here’s what Nichols recommends:

Pest-Proof the Outdoor Area

Eliminate hiding spots

  • If grass and shrubbery is close to the house, keep it well trimmed.

  • Use rocks and stones for ground cover near the home’s foundation; material like wood chips could provide shelter for pests.

  • Firewood is a favorite hideout for mice and rats. Place logs at least 20 feet away from the house, and elevate at least 18 inches off the ground.

Don’t tempt with food

  • Keep trash bins tightly sealed.

  • Keep stocked bird feeders away from the home, use squirrel guards, and clean up spilled seeds or discarded hulls.

Trim the trees

  • Any tree branches close to the roof could be a bridge for insects, squirrels, and rodents. Squirrels are especially skilled jumpers, so trim branches back at least eight to ten feet from the roof.

Keep water away

  • Termites, ants, and roaches are all drawn to moisture, so make sure gutters are clean and downspouts direct water at least three to four feet away from the home’s foundation.

  • Regularly drain decorative pools and birdbaths; eliminating standing water will help keep termites, squirrels, raccoons, possums, and other rodents away.

Pest-Proof the Entry Points

Plug cracks and holes

Seal the following:

  • cracks in the foundation

  • spots where wires or pipes pass through walls

  • any holes larger than one-quarter inch

  • any holes in the roof, no matter how small

  • Use steel hardware cloth (wire mesh that’s woven or welded) or galvanized steel flashing.

Protect the windows

  • Install hardware cloth on top of screens to prevent larger pests from chewing through.

Refresh the weather stripping

  • Check the weather stripping around doors and windows and replace any that is damaged or decayed.

Add a sweep or brush strip to exterior doors

  • By blocking off the small gaps at the base, which are especially common in older homes, pests are left with fewer ways to get inside. This will also help save money by keeping the heat inside.

Check the chimney

  • The chimney is a common nesting site for bats, birds, squirrels, and raccoons. Check the chimney every year before using it, and install a chimney cap to help keep wildlife out.

Seal the attic

  • Make sure attic vent seals are tight.

Mind the garage

  • Keep the garage door closed when possible; it presents another barrier for creatures.

Pest-Proof the Indoors

Look for gaps

  • Check under and behind refrigerators, stoves, and kitchen cabinets. Also, look between the floor and wall junctures, as well as the area around pipes, floor vents, and dryer vents. Plug any gaps with hardware cloth or steel wool.

Eliminate moisture

  • Be on the lookout for leaking pipes and clogged drains. Pay extra attention to kitchens and bathrooms, which can be particularly vulnerable to cockroach infestations.


  • Keep attics, basements, and crawl spaces well-ventilated and dry.


  • Mice and rats love hiding in clutter, especially in lightly trafficked areas like the basement, attic, and garage. Quick tidying can make these areas less tempting; clear out stacks of old newspapers and other junk.

Store off the floor

  • Cardboard boxes clustered together and piles of old clothes can be inviting to pests. Store items in sealed plastic containers, and keep them on shelves.

Lock up food

  • Store food in airtight containers and dispose of garbage regularly.

  • Don’t leave dirty dishes in the sink.

  • Leave no trace of kitchen spills and clean up crumbs—even those beneath the toaster.

  • Pick up bowls of pet food when done; don’t leave them on the floor overnight.

Another way to help protect your home from uninvited guests? Homeowners insurance through the GEICO Insurance Agency. Get a fast, free quote now.

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Opinions expressed by the author are not necessarily those of WITI.

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