Cockroaches need three things to establish a colony: food, water, and warmth. Montesano's housing stock gives them exactly that. A mix of older wood-frame homes and newer suburban construction, many without air conditioning given the historically mild summers, and prone to moisture issues given the rain. Combined with Montesano's climate — a temperate marine climate with heavy fall-through-spring rainfall and comfortable, mild summers — indoor cockroach pressure rarely lets up on its own.
We start with an inspection to identify the species and the source — sanitation issue, moisture problem, or entry point. Treatment centers on gel bait placed in cracks, voids, and under appliances, not broadcast spraying, since German cockroaches in particular have developed resistance to many surface sprays. A follow-up visit confirms the bait is working and the population is dropping.