What condition does not cause German cockroaches to leave areas of favorable harborage?

The correct answer is that warm and humid conditions do not cause German cockroaches to leave areas of favorable harborage. German cockroaches thrive in warm and humid environments, as these conditions provide them with ideal living circumstances. They are attracted to areas with moisture and warmth, which support their survival and reproduction.

On the other hand, conditions like cold and dry environments typically drive cockroaches to seek more hospitable areas. Bright light and frequent disturbances can also cause them to abandon their hiding places, as these factors increase their vulnerability to predation and threats. Thus, warm and humid conditions create a conducive atmosphere for cockroaches to remain wherever they are, reinforcing the idea that such an environment does not prompt them to leave.