Zep Acidic Toilet Bowl Cleaner - 1 Gallon (Case of 4) R43710 - Removes Hard Water Stains

WORKS FAST: Quickly removes rust, dissolves organic stains and eliminates hard water residue EASY TO APPLY: Angled neck makes under-the-rim application easy, while thick gel formula clings to vertical surfaces POWERFUL FORMULA: Strong 10 percent acid gel formula Suited for use on toilets and urinals ECONOMICAL & GREAT FOR BUSINESSES: Large bottles great to transfer to smaller containers DO NOT USE ON: Sinks, bathtubs, countertops, floors or any enameled surfaces