Scare Eye Bird Diverters are teardrop-shaped hanging visual bird deterrents that feature a predator eye on a reflective surface. A swivel attachment allows the Diverters to rotate 360 degrees for added effectiveness. Shiny, reflective surfaces act almost as an optical illusion to birds. When they see the mock predator eye and shiny reflective surface of the Diverter, they will be frightened, confused and want to avoid the treated area. Bird Diverters are ideal for: Trees, patios, sides of homes, boats, eaves, gazebos, fruit trees, and overhangs.