German cockroaches favor warm, humid spaces near food and water — kitchens, behind appliances, under sinks — and North Street's a climate shaped by the region's Great Lakes position, somewhat milder in winter than western Michigan's snowbelt keeps them active most of the year. American cockroaches, larger and reddish-brown, prefer basements, drains, and utility rooms. Housing here dates heavily to the early-to-mid-1900s auto-industry era, with established neighborhoods and full basements standard.
We start with an inspection to identify the species and the source — sanitation issue, moisture problem, or entry point. Treatment centers on gel bait placed in cracks, voids, and under appliances, not broadcast spraying, since German cockroaches in particular have developed resistance to many surface sprays. A follow-up visit confirms the bait is working and the population is dropping.