Dont you mean "Bat Dookie"....hahaha.......We always had them in our cottage, at least once or twice a summer. A broom always did the trick to "shoo" them back outside, after some substantial work chasing, and cornering the little guy. I dont think we ever made an attempt to keep them out.....it was just part of summer at the lake......
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You have to go out on a limb sometimes, cause that is where the fruit is. You can't get to the fruit from that nice safe spot, clinging to the trunk of the tree......