Bats consume enormous quantities of mosquitoes and other insects each year making them very beneficial to the ecosystem and should not, under any circumstance, be touched, injured, or killed. A single little brown bat can catch 1200 mosquito sized insects in one hour.
In your home, however, they bring the risk of rabies, Histoplasmosis, Property Damage, and Bat Mites (often mistaken for bed bugs). In a commercial setting, you can add liability, loss of customers, and depreciation.
Dispelling Myths About Bats
Bats will not fly into your hair. Bats are not blind. Bats are of benefit to humans. All bats carry rabies is just not true. In reality less than one percent of bats carry rabies, and fewer than ten people have contracted rabies from North American bats in over 50 years. A bat in house or bats in attic should be dealt with immediately