Cockroaches need three things to establish a colony: food, water, and warmth. Combs's housing stock gives them exactly that. Typical rural Arkansas housing mix of older frame homes, mobile homes, and modest newer construction. Combined with Combs's climate — Arkansas has a humid subtropical climate with hot, humid summers and generally mild winters, though the northern Ozark highlands run cooler than the Mississippi Delta lowlands in the east. — 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.