Cockroaches need three things to establish a colony: food, water, and warmth. Jansen's housing stock gives them exactly that. A blend of older agricultural-area homes and newer rural construction, built with real winter cold in mind. Combined with Jansen's climate — a continental climate with hot, humid summers and genuinely cold, snowy winters typical of the eastern Great Plains — indoor cockroach pressure rarely lets up on its own.
Treatment starts with locating the harborage points — the tight, warm, food-adjacent spaces roaches actually live in — and applying gel bait directly there rather than spraying open floor space. This targets the colony at its source and avoids the resistance issues that plague over-the-counter sprays. We follow up to verify the population has collapsed, not just scattered.