According to our expert Merlin Tuttle, any bat that moves into a bat house in your yard will already have inspected your house and found it unsuited for use. If your house was good for bats, they’d likely already be there. Since bats are wild animals, there’s never a way to guarantee how they will behave. That said, many exclusion professionals will recommend that a well-placed bat house on the exterior of the location in-question will encourage bats to choose the bat house next time they return from hibernation. This works best when the exclusion professional has built in a one-way exit to your barn/attic so that the bats are forced to find a new home. With a BatBnB nearby they’ll be very likely to take up residence there rather than try to sneak back into a building.