Has anyone used this? Maintenance-free, solar-powered units require neither batteries nor electricity. Units are completely sealed, protecting against moisture & are high/low temperature resistan. Red flashing LED light automatically turns on at dusk & off at full daylight. Concept is simple, but it works. Predators believe the flash to be the eye of another animal & they feel threatened, so they stay away. Protects against owls, coyotes, opossum, raccoons, fox bobcats, muskrats, bear, cougar, wild boar, mink, weasels & many more nocturnal predators. Use multiple units for maximum effect I'm always suspicious of "foolproof" predator deterents. Any ideas?