32 oz. Calcium, Lime and Rust Stain Remover

Zep 32 oz. Calcium . Lime and Rust Stain Remover is a concentrated acid formula that instantly removes calcium deposits . limescale and rust stains. This concentrated formula can be used on brick . stucco . cement . porcelain . glass and fiberglass to remove stains and discoloration. The cleaning liquid works as a toilet cleaner and is applicable on tubs and sinks.