Let me add right now, I KNOW how good they are, eating mosquitos by the thousands per hour (or something like that). I KNOW they are facing some disease that is wiping them out at an alarming rate (not a disease they will pass on to me mom).
We have a lovely little pond very nearby and with that of course mosquitos. We also have a colony (as in very many) living behind the chimney.
Behind the chimney is really okay with me. I don't mind having bats in my belfry ~ honest! It's just that every summer one or two makes its way into our house, and that's just creepy!
I went up to get a sweatshirt the other night and saw this bat flying about. We were not able to find him that night but he was located and promptly removed the next day ~ phew!
Funny thing is he looked tremendous flying around but actually no bigger than 3" long lying in the driveway (recovering from a trip out the window in a butterfly net).