Twice I've had a bat inside the house. Never any evidence of bats anywhere else (like the attic). Those things will creep you out. How they got in, I'll never know. One was in the kitchen and the other I saw hanging on the trim on the pass through between the kitchen and living room. Walk in the living room and catch something out of the corner of your eye, and then WTF? Give's me the heebie-jeebies just thinking about it. In the summer there's lots of them in the area that show up after sunset and that's a good thing because they eat bugs. Very few mosquitos normally and this year, I never saw a single one. Where the bats roost during the day, not a clue.