Keeping Rodents Out This Winter: Why Pest Activity Spikes in the Pacific Northwest

As temperatures drop in November and December, mice and rats across the Pacific Northwest begin searching for warm, sheltered places to spend the winter. Unfortunately, that often means homes, garages, sheds, and commercial buildings become prime targets. Rodents are incredibly resourceful and can squeeze through openings as small as a dime, making it easy for them to slip inside unnoticed. Once indoors, they look for food, nesting materials, and quiet corners to settle in, often causing damage long before anyone realizes they’re there.

During late fall and early winter, rodent activity is at its peak. Homeowners may hear scratching or scurrying in walls or attics, notice droppings near food sources, or see signs of chewing on wood, insulation, or wiring. Beyond being a nuisance, rats and mice can carry harmful bacteria, contaminate stored food, and create significant fire hazards by gnawing on electrical components. The combination of cold weather and dwindling outdoor resources makes this the season when prevention and quick response matter most.

At ProGrass, we understand the unique pest challenges of the Pacific Northwest and offer tailored solutions to keep your home or business rodent-free. Our licensed technicians ensure rodents stay out, so you can stay warm and worry-free all winter long. If you’re noticing increased activity or want to protect your space before pests move in, ProGrass is here to help.