The Penn Plax Catch n' Scratch Litter Mat is a fantastic, very handy accessory to your kitty's litter box. Simply place this mat outside of your cats box and keep litter-tracking to a minimum! As your cat exits their litter box any litter that may have stuck to their paws will become trapped in the corrugated mat. It is also a great spot for pets to satisfy their natural scratching urges, keeping their claws maintained and your furniture safe. The best part about the Catch n' Scratch Litter Mat however, is that it is super easy to clean - just throw it out and replace!