Critter Ridder Granular uses natural ingredients to keep skunks, raccoons, groundhogs, dogs, cats, and squirrels away. This multi-species repellent, made from black pepper oil, piperine and capsaicin, uses the taste and smell to help prevent the intrusion of animals. The formula is OMRI listed and can be used in organic gardens to replace chemical repellents. Sprinkle the product indoors or outdoors to create a perimeter protection or spot treatment. An application can last up to 30 days.