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Winter pest prevention is mostly maintenance — if you did the fall prep, this is about monitoring and keeping systems in place. By staying alert and following a few simple steps, you can keep unwanted pests from taking over your home during the colder months. This guide covers the key pests active in winter, what to check in December, how to monitor through January and February, and tips for keeping your home protected year-round.
Even though many pests are less active in winter, some still pose a threat. Understanding which pests are active during the cold months can help you stay prepared. Here are the most common winter pests:
Mice and rats are active all winter, searching for food and shelter. They often look for warm places to nest, like inside homes. Mice can squeeze through tiny openings, so even small gaps in your home can be a problem. Rats are larger and may be more likely to live in attics, basements, or under decks.
While most cockroaches become less active in the cold, they can still survive in heated spaces like homes. They are especially active in kitchens and bathrooms where food and moisture are available. If you see cockroaches in winter, it may mean they have found a warm place to live.
Stink bugs and boxelder bugs are dormant in the winter but may hide in wall voids, attics, or crawl spaces. They often become active again in spring, but they can still be a nuisance when they come out of hiding. These bugs may also enter homes in the fall and stay through the winter.
Silverfish and pantry moths are active year-round in warm homes. Silverfish like damp, dark areas like bathrooms and basements. Pantry moths can infest stored food, so it’s important to keep your pantry clean and organized.
December is a busy time with holiday decorations, but it’s also a good time to check for new entry points pests might use. Here are some key tasks to complete in December:
During the holidays, you may add items like light clips, door wreaths, or holiday packages that could create new gaps for pests to enter. Check around doors, windows, and any areas where items are brought inside. Make sure weather stripping and screens are intact.
Firewood brought inside can carry insects like spiders, beetles, or even mice. Store firewood away from your home and only bring in what you need for the day. If you have a woodpile near your house, check it regularly for signs of pests.
Outdoor holiday trees can sometimes carry insects like spiders or beetles. Before bringing your tree inside, shake it out and inspect the trunk and branches. You can also use a vacuum to remove any insects or debris.
Throughout January and February, it’s important to keep an eye out for signs of pests. Here are some monitoring steps to take:
Place snap traps or glue traps in areas where pests might travel, such as garages, basements, or near food storage. These traps can help you spot early signs of infestation and keep pest numbers low.
Look for signs of mouse activity like droppings, gnawed food packaging, or grease trails on walls. If you find any of these, it may be time to take action. Check these areas monthly to stay ahead of any potential problems.
Check your pantry for signs of pantry moths, which can infest grains, flour, and other dry goods. Look for small holes in packaging, webbing, or larvae. Store food in airtight containers to prevent infestations.
Some pest prevention steps should be done all year, not just in winter. These habits can help keep your home pest-free throughout the seasons:
Store food in airtight containers to keep out pests like moths and ants. Label containers so you can easily check expiration dates and rotate food. This also makes it easier to spot any signs of infestation early.
Add silica gel packs to stored grain products to absorb moisture and prevent mold and insect infestations. These small packets can be placed in jars or containers of rice, pasta, and other dry goods.
Regularly vacuum the edges of carpets and under furniture to remove food crumbs and insect eggs. This helps keep your home clean and makes it less attractive to pests like silverfish and ants.
As winter starts to fade, it’s a good idea to begin preparing for spring pest control. Here’s how to get started:
Buy winter pest prevention supplies like traps, baits, and sealants in advance. This can help you save money and ensure you have everything you need when the weather warms up.
Look over your spring pest control tips and pests in winter prevention checklist. This helps you stay on top of seasonal changes and make sure your home is ready for the next wave of pests.
Here are some helpful products to keep your home protected during the cold months:
For more information on how to prepare your home for spring, check out our Spring Pest Prevention Preview. Starting early gives you a head start on keeping your home pest-free all year long.