Associate Certified Entomologist (ACE) Practice Exam

Where are German cockroaches most commonly found?

1. Outdoors in gardens

2. Indoors in warm, moist areas

3. In attics and garages

4. In basements and sheds

The correct answer is: Indoors in warm, moist areas

German cockroaches are primarily found indoors in warm, moist areas, such as kitchens and bathrooms. These environments provide ideal conditions for their survival and reproduction, as they thrive in temperatures around 70 to 80 degrees Fahrenheit and require moisture to maintain their hydration. Typical hiding spots include under sinks, behind appliances, and in crevices or cracks near food sources. The behavior and biology of German cockroaches make them less likely to be found in outdoor environments, as they prefer the consistent habitat that indoor settings provide for their needs. Their dependence on human dwellings for food, water, and warmth is a significant factor in their common indoor presence.