I especially liked your recommendation that after getting the bats out of their attic they build bat houses to keep the bats around for insect control. I might suggest that they put the houses up before evicting the bats, so when they are driven out they already have a new home waiting and may not go elsewhere looking for one.
Cite as:
ECHO Staff 2000. Mike Benge on Bat Houses. ECHO Development Notes no. 67