Keep those unwanted guests.dirt and moisture.off the invite list by using these Needle Rib. wiper/scraper mats. The rugged grooves and ribbed polypropylene needle fibers trap and hide dirt before it enters your home or office. Features wear-resistant and color-fast design, made for light to medium traffic areas. Beveled edges reduce the risk of tripping, while the vinyl backing helps keep mat from slipping. Designed for indoor use.