Cockroaches need three things to establish a colony: food, water, and warmth. Isaban's housing stock gives them exactly that. A mix of older homes built into hillside and hollow terrain, many dating to the region's coal-mining boom, with wood-frame construction common throughout. Combined with Isaban's climate — a mountain climate with genuine winter snow and cool summers, colder than the surrounding lowland states — 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.