Common Fall Pests in the Pacific Northwest

Fall in the Pacific Northwest is absolutely gorgeous. Trees are packed with vibrant colors and lawns are still green, but while you’re admiring all this beautiful change, many pests are looking for a warm safe place to call home.

In this article, we’ll talk about the most common pests you’re likely to encounter this fall.


Rodents are one of the most common pests we see in the fall. Mice and rats will invade homes looking for a reliable source of food and warm shelter. Rodents are not only a nuisance, but they can cause property damage, trigger allergy symptoms, and spread diseases through their urine, saliva, and feces. Rodents are also known to chew on electrical wiring creating safety hazards.

Spider inside of a house


Autumn is also a time of year when people see an increase in spiders, however, it’s not because they’re trying to get warm. Spiders actually have an “antifreeze” type substance that allows them to withstand temperatures as low as -5°C. Spiders are more active this time of year because males are looking for females to mate with. They may also migrate indoors to follow their prey.

Stink Bugs

Stink Bugs

Stink bugs are known for emitting a very foul odor when they’re squished or feel threatened. These pests don’t bite, but they can damage your plants. If you find one inside of your home, suck them up with a vacuum cleaner then toss it outside immediately.



Cockroaches are one of the most disgusting pests on our list. They have been around for millions of years and are very adaptable, but they cannot survive extreme temperatures. They’re commonly found in pipes and drains. Cockroaches can trigger allergy symptoms and spread various diseases including Salmonellosis.

Experts in Pest Control

Given the fact these pests can squeeze through the smallest of openings, you’ll want to work with a professional, like United Pest Solutions when it comes to protecting your home against these pests. We’ve been providing environmentally-responsible pest control to homeowners in the Bellevue and greater Eastside area of WA for over 60 years. Don’t let your home get overtaken by pests this fall, contact us instead!

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