Formulated to quickly and thoroughly clean pumps, pipes and surfaces in whirlpools, spas, hot tubs and jetted tubs. Fast and easy self-cleaning action that safely removes odors, soap scum, bath & body oils, mold, mildew, dirt and other system residue for the inside of all pipes, pumps, fittings and circulation systems. Leaves acrylic, fiberglass, enamel, and chrome surfaces fresh and clean without scrubbing. Helps prevent buildup.