I have a bat problem with bats in my pole barn. They defecate on my vehicles and ruin the paint and chrome. There must be some acid in their stool. I know they can carry rabies, as well. Not a desirable creature to have in your buildings. I have tried running them out with a long cane pole but they come right back. I guess a pellet gun might be a good solution. I would not miss their supposed mosquito eating abilities because I still have lots of them! I have heard that playing some loud hip-hop would scare them off. I know it would do it for me! I have tried bat houses but they like my pole barn much better. They are a problem and I believe the pellet gun might be the best answer.