Ruffian Ridge nylon-polypropylene carpet tiles scrape shoes clean and trap dirt in deep grooves. Ruffian, a brushlike companion tile (6-foot-wide broadloom is also available), finishes the cleaning and drying. The two-carpet system captures more than 80 percent of shoe-born dirt. P.O. Box 12281, Calhoun, GA 30703; 800-241-2262; mannington.com.