Secures any rug on any type of carpet. Conforms to floor--no edge to catch heels. Reduces pile crush and wear areas. Flexafresh™ antimicrobial guards against mold, mildew and odor-causing bacteria. Bonded adhesives provide maximum grip without staining or transferring to carpet or rug. Moth proof and non-allergenic. Gives a smooth appearance to rugs. Adds minimal thickess. Not for use on heated floors.