Coir Mats are the best option for scraping mud and debris off shoes. The are made from mostly coconut husks making the very resourceful aswell as hardy. *Please note: Mats sizes may vary +/- 5%. Products that have natural rubber in it, may cause a plasticiser migration reaction to occur on PVC & Vinyl floors. We strongly recommend against using this product on Vinyl, PVC & decorative flooring.