All natural, biodegradable, and environmentally safe. No mixing or spraying. Simply sprinkle around the plants you want animals to avoid. Repels both deer and rabbits. This highly effective formula does not have an unpleasant odor to humans, but mimics the smell of decaying deer and rabbits, creating a strong fear response in the foraging animals. A 2 1/2 pound shaker can will cover 1,500 square feet. One application lasts up to 45 days.