The Most Common Pest Issues During the Winter Months — and How to Prevent Them

When the temperatures drop, many pests start looking for warmth and shelter — and your home can become the perfect hiding spot. Winter might feel like a break from bugs and critters, but in reality, it’s one of the most active seasons for indoor pest problems. Here are some of the most common pests we see during the colder months and how you can protect your home.

1. Rodents (Mice and Rats)

Rodents are the most common winter invaders. As soon as the weather turns cold, mice and rats search for warmth, food, and nesting spots. They can squeeze through openings as small as a dime and quickly multiply once inside.

Signs of an infestation:

• Droppings along baseboards or in cabinets

• Scratching or scurrying sounds in walls or ceilings

• Gnaw marks on food packaging or wiring

Prevention tips:

• Seal cracks and gaps around doors, windows, and foundation

• Store food in airtight containers

• Keep garages and basements clean and clutter-free

2. Spiders

While most spiders go dormant or die off in winter, some species move indoors to escape the cold. They’re often found in basements, garages, and attics where they can spin webs undisturbed.

Prevention tips:

• Vacuum corners, window sills, and storage areas regularly

• Keep outdoor lighting to a minimum (it attracts other insects, which attract spiders)

• Seal gaps around windows and entry points

3. Cockroaches

Cockroaches are hardy pests that thrive indoors year-round. During winter, they often migrate to kitchens, bathrooms, and basements where warmth and moisture are plentiful.

Prevention tips:

• Clean up crumbs, spills, and grease immediately

• Fix leaky pipes and eliminate moisture sources

• Take out trash regularly and keep it sealed

4. Overwintering Insects (Boxelder Bugs, Stink Bugs, and Lady Beetles)

These insects seek refuge inside walls, attics, and window frames when temperatures drop. While they’re not harmful, they can be a major nuisance once they start showing up inside on warmer days.

Prevention tips:

• Caulk around windows and siding before the first freeze

• Check screens and vents for holes

• Vacuum up any visible bugs — don’t crush them (especially stink bugs!)

5. Ants

Ant activity slows in the winter, but colonies often relocate indoors to stay warm. Kitchens and bathrooms are their favorite targets since food and moisture are easy to find.

Prevention tips:

• Wipe down counters and store food properly

• Repair leaky faucets and pipes

• Eliminate any standing water

Keep Your Home Protected All Winter Long

Winter pests can cause damage, spread bacteria, and make your home feel less comfortable. The good news? You don’t have to handle it alone. At ProGuard Pest Control, we offer year-round protection plans designed to keep your home pest-free — even during the coldest months.

Contact us today to schedule a winter pest inspection or learn more about preventative treatments. We’ll help you keep the pests out so you can stay warm and worry-free inside. We proudly service northwest Ohio, including Van Wert, Celina, Paulding, Delphos and surrounding areas.