Why Some Homes Have More Winter Pest Issues Than Others

Some homes have more winter pest problems because of differences in how easily pests can get inside, the amount of food and shelter the home provides, and how well the home is maintained. The way a home's environment is set up and the habits of the people inside also play a big role. Pests—such as rodents, cockroaches, spiders, and insects—try extra hard to come inside during winter because they’re looking for warmth, shelter, and something to eat.

Main Reasons Behind Winter Pest Issues in Certain Homes

• Entry Points and House Structure: Pests can squeeze through very small cracks and gaps. Homes with older or poorly maintained siding, loose windows, broken screens, and gaps around pipes or vents make it easier for pests to get in. Even tiny cracks in the foundation, missing weatherstripping on doors, and damaged roof shingles create easy entryways.
• Clutter and Available Shelter: Homes with more clutter—things piled up in basements, attics, garages, or storage areas—offer plenty of places for pests to hide and nest. Cardboard boxes, stacks of old newspapers, or unused belongings are especially attractive to rodents and insects trying to avoid cold weather.
• Readily Available Food and Water: Pests are attracted by accessible food and water. Homes where food crumbs are left out, pet food isn’t sealed, trash isn’t emptied regularly, or spills aren’t cleaned up will naturally draw more pest activity. Even a leaking pipe or a damp basement can become a magnet for pests seeking moisture.
• Nearby Outdoor Conditions: The landscape and environment around your house matter. Homes surrounded by dense vegetation, woodpiles near the walls, compost heaps, or accumulated leaves and debris attract pests and make it much easier for them to transition indoors. Trees hanging over roofs or shrubbery touching siding also provide “bridges” for pests to enter the home.
• Pest Prevention and Home Maintenance Habits: Regular upkeep—such as sealing cracks, replacing weatherstripping, using door sweeps, and keeping the home clean—makes a big difference. If a home isn’t regularly inspected for gaps and leaks, or if cleaning isn’t consistent, pest problems are much more likely during winter. Even skipping routine tasks like emptying garbage, vacuuming frequently, or storing food in airtight containers can give pests what they’re searching for.
• Location and Building Age: Older homes often have more structural weaknesses, worn-out materials, and longstanding gaps that naturally invite pests. Additionally, certain regions experience more serious winter pest pressures, especially where winters are harsh and wildlife is abundant.

How to Reduce Winter Pest Issues

• Seal all visible cracks, gaps, and holes around the outside of the home, especially at ground level and around utility pipes.
• Install and maintain screens, door sweeps, and weatherstripping on all doors and windows.
• Keep the house tidy—avoid clutter, vacuum and mop regularly, and store items in plastic bins instead of cardboard boxes.
• Store food (including pet food) in sealed containers, clean up crumbs and spills immediately, and don’t leave dirty dishes overnight.
• Fix leaks and eliminate any standing water or dampness inside the home.
• Keep trash cans sealed and remove garbage regularly.
• Trim trees and shrubs away from the house, stack firewood at least 20 feet from your home, and clear away leaves or yard debris close to the foundation.
• Schedule regular home inspections, especially before winter sets in, to detect and address potential issues early.

Summary

Some homes have more winter pest problems than others mainly because of differences in how “pest-proof” they are, how much food and shelter pests can find inside, and how well the house and yard are maintained. By paying close attention to cleaning, sealing up gaps, and minimizing food and water sources, you can greatly reduce the chance of pests choosing your home to spend the winter.