Zep-acidic-toilet-bowl-cleaner-near-me, acidic toilet bowl cleaner quickly removes rust, dissolves organic stains and eliminates hard water residue from toilets and urinals. its powerful 10 percent acid gel formula enables the cleaner to tackle even the most stubborn of stains.. Zep 32 oz. acidic toilet bowl cleaner quickly removes rust stains, organic and hard water stains. the clinging gel and 10% acid formula works longer and harder on vertical surfaces, leaving a clean shine and fresh fragrance. add this toilet cleaner to your janitorial supplies to maintain frequently used restrooms in facilities.