Many cloth doormats are machine washable, while coir or rubber mats are not. Coir is the brown bristly substance you might picture when you think of a doormat. It's made of coconut fibers ...

RUBBER SCRAPER MAT: Corrugated ridges trap mud ... Simply spray with a hose to remove dirt and mud from the doormat. This mat does not have a fabric backing or liner, so you don't have to worry ...