SOLVABLE™ Professional Grade TSP Concentrated Liquid is designed to meet the demands of professional cleaning and surface prep indoors and outdoors. It removes oil, grease, smoke stains, and other contaminants to prepare surfaces for painting, refinishing, or sealing. Our TSP Concentrated Liquid cuts through dirt on decks, siding, and fences. It also deep cleans most equipment, machinery, and workstations. Before use, always test on an inconspicuous area first. Dilute to desired strength.