Cockroaches need three things to establish a colony: food, water, and warmth. Charleroi's housing stock gives them exactly that. Brick and frame construction from the steel era dominates, much of it built directly into the region's steep terrain. Combined with Charleroi's climate — a humid continental climate with hot, humid summers, cold snowy winters, and frequent overcast skies — 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.