What characteristic might indicate a bed bug infestation?

Visible bed bug bites on individuals is a significant indicator of a bed bug infestation because these bites usually present as small, red, itchy welts on the skin, often occurring in clusters or rows. Bed bugs feed on human blood, typically at night, and their bites can lead to discomfort and itching. Recognizing these bites can be a primary sign that bed bugs are present in the home.

While the presence of mosquitoes, common household insects, or unusual odors could relate to various pest infestations, they do not specifically indicate a bed bug problem. Mosquitoes are associated with water sources, common household insects might refer to ants or cockroaches, and unusual odors could come from other pests or various sources in the environment. Therefore, visible bed bug bites directly point to the specific nature of the bed bug infestation, distinguishing it from other pest issues.