German cockroach

Warm, humid buildings, especially kitchens, bathrooms, and areas near food, water, and appliances.

An omnivorous scavenger that eats food scraps, grease, starches, adhesives, and other organic material.

Primarily nocturnal, fast-running, and strongly associated with human structures. Females carry egg cases until shortly before hatching, enabling rapid population growth.

Can contaminate food and surfaces and spread allergens that trigger asthma and allergies. It has little meaningful household benefit, though it participates in decomposition outdoors.