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Keeping Bugs Out of the House

At Winding Pathways, we take joy in fall’s colorful leaves, cool days, and clear air, but we know insects are on the move.

Box Elder Bugs, Asian Beetles, other insects and spiders, and mice all sense that frigid air is on the way and seek shelter from the cold. Houses offer secure nooks and crannies to hide in and central heat to keep them toasty warm. Houses also imitate natural wintering places. Asian beetles, for example, naturally winter in the cracks of rock outcroppings. So, a house makes a perfect substitute.

Caulking Tool

Filling a Crack

Homeowners have options for reducing winter insect infestations. Many turn to insecticides when they spot beetles or bugs clustering on interior windows and walls.   We avoid poison and opt for nontoxic solutions.

At Winding Pathways, we simply make it hard for bugs and mice to enter.  We can’t keep all of them out but we greatly reduce their numbers.  Here’s what we do before the first frost:

 

 

  • Load a tube of exterior caulk into our caulking gun and inspect our house’s exterior. We squirt caulk into every crack and hole in the siding. Likely bug entry points are where wires, cables, and pipes enter the house and around door and window frames. Often old caulk has split or fallen out, so we replace it. We also inspect thresholds to make sure there is no space beneath doors for bugs to enter. Sometimes we need to replace weather stripping around doors and windows.
  • Keep most firewood outside. We used to bring several days’ worth of firewood inside to make feeding our woodstove convenient but insects, like mosquitoes, hitchhiked on the cordwood and then roamed around the house. We now keep the wood in the cold just outside the door and only bring in a few pieces at a time when we need to feed the fire.
  • There’s an added benefit to excluding insects and mice. The holes and cracks they use to squeeze into the house also invite in winter’s cold air. Sealing them up keeps the house warm and lets us use less fuel in our furnace and wood stove.
  • Cleanse houseplants. We move some houseplants outside for the summer and bring them back indoors before the first frost, but insects can ride the plants into our home.  To prevent this, we carefully clean and repot plants. Master Gardener, Tina Patterson, had an excellent column in The Gazette, Living Section, Sunday, October 1, 2017, that describes in detail ways to safely clean your plants and keep them healthy inside all winter.
  • We have reprinted this with permission of the Gazette, Linn County Master Gardeners Program, and Tina Patterson.

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