You name it, I tried it. Nothing worked for my owl problem. I lost one or more chickens every night. I ordered your Nite Guard solar lights and hung the lights at 8 feet on my hoop houses because it was simple. The owls were still coming and a couple months later I RE-READ the instructions and mounted them AS WAS STATED IN THE INSTRUCTIONS instead of the way I found easiest. I mounted the lights on 2×2 poles, twelve feet high, and in all four directions for 360 degree coverage. Then BOOM, on August 15th of 2005 my predator problem stopped. I have NEVER again had a problem. Done. Finished. It was incredible. I have been a faithful repeat customer ever since.