Bats often roost under eves at night and leave early in the morning before sunrise. During the day they roost in and among cracks, crevices, foliage, caves, and other manmade objects like attics, barns, and abandoned buildings where it is quiet and less chance of disturbance. Never attempt to touch or forcefully remove a bat from your home. The best method is to make your home less appealing. First try using bright lights in the area that they prefer to roost.
Most bats prefer dark areas when searching for a potential roost site.
Both methods are very effective but always first consider keeping the bats. Aside from being a wonderful conversation piece they will also control the insect population in your neighborhood. Many mammals carry rabies. In the western United States the Coyote, Gray Fox, and the Striped Skunk are the most common carriers of the rabies virus. Most bats are insectivorous which means that they eat insects.