Floweasy One Shot Liquid Drain Opener 20 oz. (Pack of 12)Clogged drains are no match for flow easy sulfuric acid drain opener. Its proprietary virgin sulfuric acid formula dissolves grease and other organic material in 15 minutes the environmentally and consumer friendly flow easy is the fast acting, professional strength drain opener that plumbers reach for first. But, its still safe enough for home use in all types of drains and toilets, even with septic systems. Plus, it can be poured into standing