Most people would never consider providing housing for bats. A lot of people consider bats to creatures to be avoided. As discussed in this Bat Myth article, there is no real danger to humans from bats. But why provide housing?
The answer lies in their diet. Bats consume an enormous amount of insects. Brown bats (Myotis lucifugas and Eptesicus fuscus) are the most abundant species of bat in North America. A single brown bat can consume up to 7,000 insects in one evening.
Do you have a mosquito problem in your yard? A proliferation of other insects? Try putting up a bat house. You will see a decrease in your insect population almost immediately. The best part is that bats work at night. While you sleep, your 'natural pest control team' can be working to reduce to your insect problem.
Unlike attracting backyard birds, you do not need to feed bats. You simply need to set up a house and attract them.
Bats are experiencing somewhat of a housing shortage because their favorite habitats such as old hollow trees, barns, and old houses are rapidly disappearing. For this reason many bats are choosing bat houses as permanent roosting sites. Refer to this Bat Housing article for tips on maximizing your bat house for attracting these natural insect hunters.