Each egg case contains thirty to forty eggs that take about two weeks to hatch. A female German cockroach may produce one to seven cases during her life. German cockroaches are mainly found in kitchens and bathrooms around sinks and drains, behind refrigerators and stoves, and in cabinets. However, if sanitation is poor, German cockroaches may be found in other places. Even though adult German cockroaches have wings, they do not fly.
All stages have two light, yellow-brown bands that run across their backs.
The bands on adult males may be hard to see since their light brown wings completely cover their narrow bodies. The males can fly in a warm environment. Brownbanded cockroaches may be found anywhere in a structure, especially above floor level around cabinets and in corners near the ceiling. Egg cases are often glued underneath drawers and in furniture and appliances, including TV's, microwaves, computers, and radios. These cockroaches are normally found outdoors, but they can live inside.