Ethical Pets-Clean Paws Cat Mat. This mat helps prevent dirty paw prints from appearing all over the house after your pup has traipsed through wet grass, dirt and mud. This mat is made of absorbent microfiber that can hold up to ten times its weight in dirt and water, and has a non-skid backing that holds it firmly in place at the door. This package contains one 20x31 inch mat. Machine washable. Imported.