Cockroaches need three things to establish a colony: food, water, and warmth. London's housing stock gives them exactly that. A mix of established Columbus-area neighborhoods and some of the fastest new-home construction in the Midwest, most with basements. Combined with London's climate — a four-season climate typical of the Midwest, with real winter cold and consistent summer humidity — 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.