When placed in front of the litter box, Litter Buster Litter Mats trap kicked litter and also clean your cat's paws. Thousands of soft grasslike blades prevent litter from spreading around the house. Litter Buster Litter Mats trap litter and clean a cat's paws Grasslike blades prevent litter from spreading around the house Soft Blades are specially formulated for cats Proven track record of success Great with Silica and Clumping Litter