Repellex 20001 50-Count Systemic Animal Repellent Systemic animal repellent Approved for repelling deer, rabbits, moles, voles, gophers, groundhogs, feral hogs, dogs and cats Breakthrough technology allows capsaicin (hot pepper) to be absorbed into the plant by simply planting a tablet next to a growing plants root system Once the repellent is absorbed over 7-30 days, the repellent will stay active for up to one whole year Since the repellent is internally treating the plant, it will not wash off in the rain like traditional repellents do over time