GrassWorx Clean Machine Ultimate Garage Doormat, 18" x 34", Black (10371026) Clean Machine scraper doormat with triple cleaning action - grabs, holds and hides up to one pound of dirt per week Made with genuine AstroTurf scraper blades to stop dirt at your door, and works better than any other doormat to keep your home clean Great for garage doors, front and back doors; Durable hardworking doormat resists mold and mildew and the color will not fade Works in all weather conditions  removing snow, mud, sand, grass, leaves, and dirt from shoes and boots Easy to clean: shake out dirt and rinse with garden hose