I will be interested to know if you get bats. I have had a bat house up for a dozen years and never had one. A friend built a huge bat house about 4 foot square and never got a bat. I did put up 12 houses for blue birds and got Tree Swallows that eat bugs and are fun to watch, but they leave around the middle of June. I do get Barn Swallows that visit my pond and eat bugs. I had a Martin house up for 5 years and never got any to stay. I had some for three days but they left. I had Wood Ducks and their ducklings last year so I put up a duck house and got nothing this year. I haven't had any mosquitoes but that's probably due to the dry weather, and the fact that I have let my pond grow up with cattails and spatterdock and from that I have frogs crawling all over each other and minnows everywhere.
