This extra-strength toilet bowl cleaner removes even the toughest hard water stains, mineral deposits, lime scale, and rust in your toilet. The thick blue liquid formula clings to the bowl, and its 14.5% hydrochloric acid delivers a powerful clean. Cleans tough hard water rings and rust stains, and deodorizes with a fresh, clean scent. Safe for septic tanks and pipes. Size: 24 Oz. Type: Liquid Fragrance: Fresh