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Keeping pests out of trash and recycling areas requires securing lids and access points, removing food and moisture sources, and keeping containers and enclosures clean and well-maintained to eliminate the odors and residues that attract wildlife and insects. Unsealed bags, greasy recyclables, standing water, and torn liners provide easy feeding and nesting opportunities for raccoons,…

Keeping a 1- to 2-foot cleared perimeter free of dense vegetation and mulch, eliminating standing water, trimming shrubs and tree branches away from the house, and removing leaf litter and debris are the primary yard maintenance steps that reduce pest harborage and entry at the foundation. Those actions work by depriving pests of moisture, shelter,…

Sealing exterior entry points—vents, soffits, roofline gaps, chimney openings and torn screens—along with trimming vegetation away from the structure and correcting moisture problems are the most effective ways to stop pests from entering an attic during the summer months. Pests use small openings and unmaintained roof penetrations to access the cooler, sheltered spaces attics provide;…

Cracks and gaps around utility-lines provide direct, unsealed pathways through the building envelope, allowing insects and rodents to move from outdoor habitat into wall cavities, attics, basements, and living spaces without having to penetrate intact siding or foundation. Small pests—ants, cockroaches, spiders, and flies—can squeeze through millimeter-scale openings, while mice and rats use larger voids…

Keeping pests out of a garage during hot months requires sealing gaps and vents, eliminating food and water sources, and reducing the shaded, cluttered refuges that insects and rodents seek. Warmer temperatures drive many pests into cooler, sheltered spaces like garages, where vehicle wiring, stored cardboard, firewood and moisture pockets make ideal nesting and feeding…

Many common summer insects can enter homes through openings as small as 1/16 to 1/8 inch (about 1.5–3 mm); mosquitoes, tiny flies and gnats easily pass through those gaps, and many ant species and small beetles can exploit cracks only slightly larger. Larger insects such as yellowjackets, paper wasps and house spiders generally need bigger…

Landscaping affects how many pests reach a house by creating or removing the food, moisture, shelter, and travel routes that insects and rodents use to survive and move toward structures. Features such as dense groundcover, mulched planting beds, stacked firewood, overwatered lawns, and poorly graded soil increase local pest populations and provide continuous habitat that…

Outdoor clutter—stacks of firewood, leaf and brush piles, old tires, discarded building materials, and dense vegetation up against foundations—provides shelter, food and moisture that attract rodents, insects and other pests toward homes. In the Pacific Northwest, where mild, wet winters and abundant forest-edge habitat prolong pest activity and favor moisture-loving species, clutter becomes especially effective…

Screens and weatherstripping matter more in summer because warm temperatures and increased human activity around the home create both more pest pressure and more opportunities for pests to enter. During the Pacific Northwest’s warmer, drier months people commonly open windows and doors for ventilation, while local populations of mosquitoes, midges, flies, wasps and foraging ants…

Sealing a home without trapping pests inside requires a coordinated approach: inspect and remove or exclude any animals or insects already inside, then close exterior entry points while installing one-way exclusion devices, vent covers, and screened openings that allow pests to exit but prevent re-entry. Effective exclusion combines a careful interior sweep of attics, crawl…