German cockroaches favor warm, humid spaces near food and water — kitchens, behind appliances, under sinks — and Kandiyohi's a climate with some of the coldest winter temperatures in the lower 48, especially in the northern part of the state keeps them active most of the year. American cockroaches, larger and reddish-brown, prefer basements, drains, and utility rooms. Older farmhouses and small-town homes, nearly all with full basements built to handle the region's extreme winter cold.
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.