What are the hidden dangers of bat droppings?
Bat droppings, also known as guano, can build up in attics and eaves that have been used by bats. Even if the human occupants of the building are not aware of the guano, they can be harmed by it. After guano has laid around for a couple of years, a fungus can grow in it, releasing spores into the air that cause histoplasmosis in humans.
