Cockroaches need three things to establish a colony: food, water, and warmth. Harpers Ferry's housing stock gives them exactly that. A mix of established suburban neighborhoods and newer subdivisions tied to the growing DC-exurb population, most with basements. Combined with Harpers Ferry's climate — a four-season climate shaped by nearby mountain ridges, with real winter cold and humid 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.