Cockroaches need three things to establish a colony: food, water, and warmth. Merino's housing stock gives them exactly that. A mix of older farmhouses and modest small-town homes, most built with basements to handle harsh winters and severe weather. Combined with Merino's climate — a continental climate with real seasonal extremes and significant year-to-year rainfall variation — 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.