Stop the Rodent Spray Patent pending formula is extra high potency. Long lasting barrier protects up to six months. Designed for use in automotive industry. Gives the look of a professionally detailed engine compartment. Active ingredient, capsaicin, works on all types of rodents including rats, mice, squirrels, rabbits, and chipmunks. Non-corrosive, safe for all vehicle components. No noticeable odor thirty minutes after application.