Natural Bentonite Advance Control Plus (Fragrance-free) 6 LControl + is a latest generation hygienic clumping litter. Its formula allows it to last longer than normal litters and to be a valid diagnostic tool in checking your cat's health. The Control + is a bed based on bentonite, a natural clay without added fragrances, in full respect of the physical well being of your cat. Features: Easy to remove: makes the ball, high binding power. Long life: top performance litter. 100% Natural: composed of clay