While bats may be beneficial for insect control, they can also pose serious health risks to you, your family and your pets. The primary danger from these pests is rabies, which is almost always fatal for humans. It’s impossible to determine if a bat has rabies without testing, so do not approach or try to remove them. A nip from a bat, which may not even be felt, can transmit the disease.
Aside from this danger, their droppings, or guano, pose several problems. Exposure to the fungus that grows in guano can lead to histoplasmosis, a lung disease. Guano can also damage your home, and one bat produces dozens of droppings a day. With a large colony of bats under your roof, this can add up quickly and do significant damage to your structure.