Bats normally live in hollow trees, under loose bark and in cracks of rocky ledges.
However, in urban areas they frequently utilize attics or areas behind shutters and downspouts. These bats feed exclusively on insects. They devour more mosquitoes and other insects than birds and bug zappers do, but people usually do not perceive bats as beneficial. Benefits of Bats Bats are one of the most feared and least regarded mammals on earth. Many millions of bats die each year out of human fear and ignorance, and coupled with habitat destruction and roost loss, bat numbers are declining rapidly.