Bat-proofing is the best way to prevent a potential infestation in a home, attic or building. After hibernation period ends is the most appropriate time to inspect and determine access points (attic, louvers, under facia boards) they are normally active at dusk.
It is recommended that homeowners seal any cracks or crevices with caulk and steel wool. Pay special attention to holes in the structure that lead to dark secluded areas. Also, screen attic vents and openings to chimneys, and install door sweeps. Exclusion is the only method to keep bats out long term.
Bats can pose a serious health threat to humans if they are found inside a structure. Fungi that harbors in bat droppings can cause the lung disease, histoplasmosis. An accumulation of droppings should be professionally decontaminated and removed.
A small percentage of bats are also infected with rabies, but may not show symptoms. Rabies can be transmitted when saliva or even the body tissue of an infected animal comes into contact with another animal or human. Therefore, it is important to seek medical attention if you’ve had any unprotected, physical contact with a bat.
Another interesting bat fact is they are the only mammal capable of true flight. The surface of a bat’s wing is equipped with bumps called “Merkel cells”. These bumps have tiny hairs that help sense airflow during flight.