Containing dirt and dust during renovation work in occupied buildings can be a nightmare. Clean Room Mats will solve your problem. Also referred to as “Step Off" or "Sticky Mats”, these disposable mats consist of a white adhesive surface that attracts and contains dust and dirt. The mat can be placed on low-profile carpet, tile or concrete in a location where workers exit a dirty, construction area and enter a finished area. Dirt from workers shoes will be contained, with no adhesive transfer. Each Clean Room Mat has 30 sheets. Four mats per case; (sold in case lots only).