The German cockroach is a species of small cockroach, typically about 1.1 to 1.6 cm long. It cannot fly. The reproduction rate is faster, German cockroaches can breed at a rate of up to six generations per year. They are thigmotactic. German cockroaches are not known to bite humans. Instead, they primarily threaten human health with their ability to spread bacteria and human pathogens. German cockroach infestations occur in a variety of human occupied spaces, they are most often associated with restaurants, food processing facilities, hotels, nursing homes and other institutional facilities