D-Straps deter bears by retrofitting trashcans and are a great first step toward convincing bears to move along. These straps are designed to discourage bears by denying easy access to food. This reduces the likelihood of bears becoming habituated and increases the likelihood they will move on in search of natural foods. Bear straps are effective at deterring other critters including Raccoons, Possums, Coyotes, Foxes, Magpies, Ravens, and Crows.