German cockroaches favor warm, humid spaces near food and water — kitchens, behind appliances, under sinks — and Gerlach's a stark desert climate with big day-to-night and summer-to-winter temperature swings typical of the Great Basin keeps them active most of the year. American cockroaches, larger and reddish-brown, prefer basements, drains, and utility rooms. Ranch-style homes and manufactured housing dominate this low-density region, built for a harsh, dry climate with real winter cold.
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.