German cockroaches favor warm, humid spaces near food and water — kitchens, behind appliances, under sinks — and Harwinton's a four-season New England climate without the Sound's moderating effect, meaning colder winters than the shoreline keeps them active most of the year. American cockroaches, larger and reddish-brown, prefer basements, drains, and utility rooms. A mix of historic farmhouses and mid-century suburban homes, most with basements given the colder inland winters.
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.