German cockroaches favor warm, humid spaces near food and water — kitchens, behind appliances, under sinks — and Winters's a climate shaped by intensive irrigation agriculture, with hot, dry summers and damp winter fog keeps them active most of the year. American cockroaches, larger and reddish-brown, prefer basements, drains, and utility rooms. A blend of established farming communities and newer tract housing, built for extreme summer heat rather than 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.