German cockroaches favor warm, humid spaces near food and water — kitchens, behind appliances, under sinks — and Defiance's a climate shaped by the Missouri River valley, prone to strong winds across the region's open terrain keeps them active most of the year. American cockroaches, larger and reddish-brown, prefer basements, drains, and utility rooms. Wood-frame farmhouses and river-valley homes dominate here, built for the area's wide seasonal swings.
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.