I have a small pond in my yard with goldfish that grew from feeder fish to 10 inch beauties over the course of nine years. Young have been born and the pond was a delight until raccoons discovered it three years ago. The plants were trashed, water muddied, filters destroyed, and the raccoons provided the ultimate insult of bringing the fish up on the deck and consuming them in one of the chairs there. I tried leaving a radio on at night, hanging containers of coyote urine, leaving lights on, nothing helped. Then I got a trap and caught several raccoons and relocated them about 4 miles away near a reservoir. I actually marked one of them with spray paint. I caught that one again two nights later. Still they messed up the pond and killed fish. Last spring I saw ordered four of your Nite Guards. I faced them in four directions around the pond about 18 inches from the ground. HOORAY, they worked and are still working. I have had absolutely no problem since I hung those little wonders up. I oh so heartily recommend them. They have given me a summer of peace.