Safer Brand Critter Ridder Animal Repellent works to protect your yard from wildlife and stray pets. Without harming the animal, the dual-action formula repels by overwhelming their sense of smell and taste. Thanks to highly potent active ingredients, these granules are fast acting, teaching the pests quickly to avoid the area. Use Critter Ridder® to protect your lawn and flowerbeds from raccoons, groundhogs, cats, dogs, and more. One application provides up to 30 days of critter protection.