Many gardens use birdhouses to attract spectacular creatures that add color and movement to the landscape. But have you ever considered adding a bat house? Bats can actually be quite beneficial to your neighborhood. They help solve one of my gardening pet peeves (though this may not be as much of a problem for you as it is for me here in Texas). When the day finally cools off, which should be prime gardening time, that’s when the mosquitos show up. In droves. But one bat can eat 10,000 mosquitos a night.* From Dave's Garden.