Pest control in Seattle is roof rats, carpenter ants, and anything else that likes a wet eave. The long wet season softens fascia, deck edges, and sill plates, and carpenter ants move into wood that is already compromised. Roof rats use ivy, alley cover, cedar gaps, and tree limbs on the roof to reach an attic in Ballard, Phinney, and a hundred other blocks with the same recipe. Yellowjackets take wall voids in the drier weeks. The pest and the moisture are a pair.
Say what you actually found. Scratching overhead after dark, droppings in insulation, frass under a window sill, wings on the kitchen counter, or a nest you can hear in a wall. Those are different visits. Say whether pets or children are in the house. Do not guess a species if you are unsure. Describe the insect, the time of day, and the room. A spray that leaves the rotten corner board and the ivy bridge untouched will not finish a carpenter ant or a rat problem.
Walk the outside. Limbs on the roof, a gap at the garage door, firewood against the siding, a crawl vent without a screen, a gutter that has been overflowing into the fascia all wet season. Rats do not need a dramatic hole. They need a path and a dry attic above a damp city. If you are opening a wall for a leak repair, say so, because the colony and the wet wood should be seen before the cavity is closed.
Mention how long the noise or the wings have been around. A photo helps later. The first sentence should be the evidence and the neighborhood, so the house type is clear. A townhouse with shared walls is a different path from a detached bungalow with a crawl space.
The long wet season will keep making soft wood. Call with the evidence, the room, and whether a leak is what opened the lumber they are using. Call the number on this page.