Jason, I just saw a product on a gardening show that might be the answer to your problem. It's a sprinkler with an infared sensor built into it. When something trips the sensor it shoots out a 3 second burst of water. It was designed to get rid of garden pest. You might check with some of the garden centers. It's around a hundred dollars but that would be cheaper than rebuilding fences. It was on the Paul James show. Didn't give a make or address. Sorry.