Peters Rollers are great tasting treats for rabbits, guinea pigs, mice and rats. Made from a blend of cereal and dried elderberry, orange and apple pieces, each disc will provide hours of nibbling pleasure for your pet. Hang a Roller on the side of the hutch to entice your pet to reach up and nibble it. Helps to keep your pet active and stimulated when confined to the enclosure. Suitable for all breeds of adult mice, rats, rabbits and guinea pigs.