A cockroach infestation in Nogales usually traces back to a specific conducive condition: a leaking pipe, a gap behind a stove, cluttered storage near food. Older adobe and masonry construction near the historic core gives way to newer stucco tract homes and manufactured housing further out. Once established, an infestation spreads unit-to-unit in multi-family buildings through shared walls and plumbing chases.
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.