I have had a bat box hanging on my house for two years now. So far, no bats. And I really wanted them for insect control.
Wow, that is really neat! I wish you could get some bats to move in. Have you talked to a local expert? I get upset whenever someone is persecuting or needlessly fearful about bats... Not DS, he was just goading me............................................I think :)
The morons at the U of A (probably the same ones bringing in M. Moore to speak) got rid of all the bats hanging at the football stadium. Within two years, the mosquitoes are out of control in the central part of town closest to the U, and much worse everywhere else too.