Loosens carpet soil so that it is easily picked up by the vacuum. The soils are carried to the recovery tank of a self-contained hot water extractor or to the “dump site” of a direct hook-up machine. MARK L3 mixes easily with hot water. At operating temperatures above 120° F (49° C) this product will produce minimal foam. It will not leave a sticky residue to mask fabric sheen and promote resoiling.