German cockroaches favor warm, humid spaces near food and water — kitchens, behind appliances, under sinks — and Zarephath's a climate shaped by proximity to the Atlantic and the Delaware River, milder in winter than the dense northern suburbs keeps them active most of the year. American cockroaches, larger and reddish-brown, prefer basements, drains, and utility rooms. Housing here ranges from centuries-old capital-region homes to newer shore-town and suburban development.
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.