German cockroaches favor warm, humid spaces near food and water — kitchens, behind appliances, under sinks — and North Wilkesboro's a humid subtropical climate in and around Charlotte and the coastal plain, cooler and more mountain-influenced around Asheville keeps them active most of the year. American cockroaches, larger and reddish-brown, prefer basements, drains, and utility rooms. Crawl-space construction is common throughout this region, though mountain homes near Asheville often include basements for cooler, wetter conditions.
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.