Sanicat Clumping Absorbent Cat Litter 20L - 100% Natural & Clean Litter Clumping litter with maximum absorption, without having to say goodbye to controlling unwanted odours. Made from natural bentonite, Sanicat Clumping makes cats feel like they are in their natural environment. As it is a clumping litter with thicker granules, it also prevents your cat from dragging the litter outside the litter box. Directions for Sanicat clumping: Fill the tray with 4-6 cm of litter. The product works by forming clumps when in contact with urine that can be removed easily with a scoop to keep the tray clean, and then replenish with fresh litter to maintain the original depth.