Cleanstep Contamination Control Mat Removes dirt as you walk on it! These doormats, floormats and household mats can save you thousands of dollars in cleaning costs alone. CleanStep contamination control mats are used for manufacturing and industrial buildings, offices and homes. They are tacky or sticky and used to collect dirt, dust, grease and other contaminants from the soles of shoes. FREE Gift With Each Purchase Over $10! 30 Layer Mats: $72.95 each Choose Color White Grey Marble Sandstone 30 Layer Mats (Refills): $44.95 each 60 Layer Mats: $87.95 each Choose Color White Grey Marble Sandstone 60 Layer Mats (Refills): $71.95 each