Havahart Woodstream 2# Critter Ridder Critter Ridder animal repellent uses a powerful, patented blend of ingredients derived from hot peppers, which work together to irritate nuisance animals when they smell, taste or touch a treated area. The intense burning sensation that Critter Ridder delivers will turn animals away, and after a few unpleasant visits, they will be unwilling to return. Oil of Black Pepper .. 0.480% Piperine (From Oleoresin of Black Pepper) .. 0.185% Capsaicin and Related Capsaicinoids (From Oleoresin of Capsicum) .. 0.032%