Bats are generally beneficial because they eat insects such as mosquitoes. However, their odor, noise, feces / Guano, and staining pose significant problems in human occupied structures. No matter how beneficial they are, most people fear them immensely. In rare cases, bats can carry rabies and can transmit them to humans by contact. Additionally, their droppings (guano) can pose respiratory health risks, especially in large amounts and in confined spaces.