This animal repellent works by using both taste and odor deterrents to keep unwanted pests away while remaining non offensive to humans It is proven to repel cats dogs chipmunks groundhogs squirrels and skunks using active ingredients such as oil of black pepper piperine and capsaicin One application can last up to thirty days with reapplication recommended after heavy rain It is EPA registered and OMRI listed making it suitable for use in organic gardening Designed for versatility it can be used outdoors in gardens lawns and landscaped areas as well as indoors in basements cellars and storage spaces