Three times larger than the closed-box Litter Buster Litter Mat, the Extra Large Litter Buster Litter Mat is perfect for open litter boxes. Litter Buster Litter Mat is made of soft grasslike blades that catch and prevent litter for spreading around the house. Traps litter and cleans a cat's paws Up to three times larger than most other litter mats Simple one-piece design is perfect for open-top litter boxes