Perfect Dirt Trap - The WOLTERS Cleankeeper Doormat in size M (78x50 cm) dark gray. The WOLTERS Cleankeeper Doormat is a true dirt trap. Thanks to numerous soft microfiber strands, the mat absorbs mud and water within seconds, which your dog brings into the house daily. It dries significantly faster than conventional mats. A rubberized underside prevents unwanted slipping. The doormat is ideal for the house, car, or dog crate. The mat is machine washable on a gentle cycle at 30 degrees and should be air-dried.