I found two web pages floor really big and normal size floor mats Ithink they would be great for litter boxes. Waterhog is a brand I think has a lot to offer, and I am sharing two web pages you may find interesting.
http://www.americanfloormats.com/?gc...FQELbAodVhn38w
http://www.barcoproducts.com/store/i...PARTMENT_ID=38
http://www.americanfloormats.com/?gc...FQELbAodVhn38w
http://www.barcoproducts.com/store/i...PARTMENT_ID=38