Havahart Critter Ridder 3142 Animal Repellent Granular Shaker, 2-Pound Repels by taste and odor - not offensive to humans Proven to repel cats, dogs, chipmunks, groundhogs, squirrels and skunks Contains oil of black pepper, piperine and capsaicin One application lasts up to 30 days  reapply after heavy rain OMRI Listed and compliant for use in organic gardening