As winter settles across the Fraser Valley, many homeowners are surprised to see insects appearing inside their homes — even in the coldest months of the year. Beetles crawling on ceilings, flies emerging from walls, and bugs gathering around windows are common winter complaints throughout Chilliwack, Abbotsford, Langley, and Mission.
While most people expect pest problems during summer, winter is actually peak season for overwintering insects entering residential properties. These pests seek shelter indoors and remain hidden inside walls and attics until warmer weather arrives.
If you are seeing insects inside your home this winter, there is a reason — and a solution.
Many insect species survive winter by entering a dormant state known as overwintering. Instead of dying off in cold weather, they search for protected indoor spaces where temperatures remain stable.
Homes provide ideal overwintering conditions because they offer:
Once inside, insects remain hidden until warmer days trigger activity — which is why homeowners often see them suddenly appear on sunny winter afternoons.
Several insect species are especially active during winter in British Columbia.
Often mistaken for native ladybugs, Asian lady beetles gather in large numbers on sunny exterior walls before entering homes. Once inside, they are commonly found on ceilings, upper floors, and in bathrooms.
These flies enter homes in fall and emerge during winter and early spring. They are slow-moving and often gather near windows and light sources.
These black and red insects gather on warm siding and sneak inside through cracks and openings.
Stink bugs overwinter inside wall voids and emerge during warm winter days.
While spiders remain active year-round, winter drives them deeper into homes where insects provide a food source.
Overwintering insects typically hide in:
On warm winter days, they become active and enter living spaces, often appearing suddenly and in large numbers.
Many homeowners attempt to remove winter insects by vacuuming or using store-bought sprays. While this may temporarily reduce visible insects, it does not address the source of the infestation.
DIY solutions fail because:
Without professional treatment, insects will continue emerging throughout winter and early spring.
Professional insect control focuses on both elimination and prevention.
A proper winter treatment includes:
This creates a protective barrier around the home and stops insects before they can enter.
Homeowners can reduce insect entry by:
However, professional treatment provides the most effective long-term protection.
If you are seeing insects repeatedly throughout winter, professional treatment is recommended. Overwintering insects will continue emerging until their nesting areas are eliminated.
Priority Pest Management provides professional winter pest control services throughout Chilliwack, Abbotsford, Langley, Mission, and surrounding communities.
Our treatments eliminate active insects and prevent new ones from entering, keeping your home protected all winter long.
If you are dealing with insects in your home this winter, contact Priority Pest Management today to book your professional inspection and treatment.
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