Tech True 184538 Multi-layered Tacky Mat removes dirt and dust from foot traffic and equipment wheels prior to entering a controlled environment. Each numbered layer is fully coated with a particle grabbing adhesive. Low density polyethylene film layer is coated with water soluble adhesive. Once a layer is saturated, remove to return the mat to maximum efficiency. Mats can be removed during routine floor maintenance. Available in high tack for demanding environments.