I do love this bug zapper, but I noticed there weren't as many dead bugs around it as I thought there would be, seeing as we have a heavily wooded property complete with creek (lots of bugs!).  One late night, almost midnight, I went out into the side yard with my dog so she could do her business, and saw BATS flying from the woods and zooming by the bug zapper, then back to the trees again.  The bats were picking off the bugs that were attracted by the bug zapper!  How cool is that?!?  I am such a city kid that I made myself a cup of hot cocoa and sat by the back door with the porch light on, just watching the bats go back and forth.  Since that evening, I've seen the bats almost every time I happen to go outside late at night, so I guess my bug zapper is doing well to keep our local bats fat and happy.  (I'm glad to say the bats are in no danger from this zapper due to the grid guard, btw.)