Best Grey Cat Litter Mat: A large 24x18 inch cat mat for litter box that catches every stray piece of litter from your cat s paws or spilled from the litter box. Place it in front of or underneath the box it s up to you. Keep your home clean. No need for daily sweeping, no lingering odors just a cleaner, fresher home and more free time for you. Double Layer Honeycomb Structure: The top layer features holes that capture all kinds of litter, allowing it to fall through to the waterproof bottom layer for easy cleanup. Simply pick up the mat, pour the trapped litter back into the box, and reuse it mess-free and effortless.