skip to main content

Our Guide to Winter Pests in California

California’s climate attracts several pests in the winter. This guide from Brooks Pest Control explains the winter pests in California to look out for.

Our Guide to Winter Pests in California

While winter in California is far warmer than in many other parts of the country, it does come with its own set of challenges for homeowners. One of the most persistent problems is dealing with the variety of pests that find their way indoors during the colder months. While the Golden State is known for its sunny beaches and diverse landscapes, it’s also home to several invasive critters.

If you’re worried about common winter pests in California invading your home, don’t panic. Brooks Pest Control is here to help. In this comprehensive California winter pest control guide, we’ll explore the types of pests that are most active and pose the most significant threat to your home. We’ll go over the telltale signs of infestations and provide tips and advice for pest prevention and control.

Background on California’s Pest Climate

California’s relatively mild winters create an environment that continues to attract and support a variety of pests. Many of these pests remain active throughout the year, meaning you must remain vigilant to keep your home pest-free even during the winter months.

Common Winter Pests in California

There are several winter pests in California you need to look out for as a homeowner. Our California pest control technicians are trained to identify and treat several common pests that can wreak havoc on your home. These include the following.


Rodents, including rats and mice, find California’s winter climate to be perfectly pleasant. As temperatures drop, these pests seek out the warmth and shelter provided by human dwellings. They often nest in attics, basements, and within walls, where they cause extensive property damage by gnawing through wires, insulation, and even structural elements of homes. This can lead to potential fire risks and costly repairs down the road.


Another common winter pest in California to look out for is cockroaches. These resilient creatures invade homes in search of warmth and food, quickly establishing an unwelcome presence. They’re more than a nuisance, too, as roaches pose a significant health risk due to the diseases they carry and the allergens they produce. These can trigger asthma attacks and other allergic reactions, in addition to potentially contaminating food.


Several spider species, including the notorious black widow and brown recluse, are common winter pests in California. They prefer dark, secluded areas, making your home’s basements, crawlspaces, and other dark areas an ideal habitat. Spiders can pose a threat to humans due to their venomous bites, which can result in severe reactions and may require medical attention.


Ant colonies remain active in California throughout the winter, especially in southern warmer regions. They infest homes in search of food and water, often invading kitchens and bathrooms. While typically not dangerous, ant infestations can be a nuisance and are hard to eliminate if not addressed quickly.

A group of ants climb across a mess of salt on a kitchen countertop.

Signs of Winter Pest Infestation

Recognizing the signs of a winter pest infestation in California can be the key to preventing extensive property damage and potential health risks. These warning signals can vary depending on the specific pest, but here are some common indicators to look out for:

  • Rodents. These critters often leave behind visible droppings or cause noticeable damage like chewed wires or gnawed furniture. You may also hear scratching or running sounds within your walls or attic when they’re around.
  • Roaches. They tend to leave behind droppings that resemble coffee grounds, and you might spot them scurrying around when you turn on a light unexpectedly.
  • Spiders. They’re usually seen in corners of rooms or in dark, secluded areas. They don’t like humans and will usually run away if provoked.
  • Ants. They’re typically spotted in long trails, particularly in kitchens and bathrooms where they have access to food and water. Unusual smells, especially a strong, musty odor, can also indicate an ant infestation.

How To Prevent Winter Pests in California

The best form of pest control is proper prevention. Keeping your home clean, sealing any cracks or crevices through which pests could gain entry, and securely storing food can all help keep pest problems at bay. Additionally, regular inspections of your home can prevent a minor problem from becoming a major infestation.

There are some natural pest control methods out there you can try, such as using peppermint oil for rodents or diatomaceous earth for insects. You can also purchase store-bought traps and bait stations to handle ants and other small pests. However, larger infestations or problems with more dangerous pests are best left to the professionals to minimize risk to you and your property.

Invest in Proactive Pest Control Services

If your home has been invaded by these common winter pests or other pests, call in the experts at Brooks Pest Control. Our friendly team of technicians knows how to get rid of winter pests in California, including cockroaches, spiders, mice, rats, and ants. We can also provide you with preventive pest control services to help keep your property protected in the future.

Ready to get the ball rolling? View our full list of service areas in California to ensure your home is within reach of our service technicians. If you have any questions about what we offer, give us a call!