• Brand Name | JWG

Mark's Shark Attack™ liquid drain cleaner is the world's most powerful liquid drain cleaner. Its sulfuric acid based formula attacks the toughest clogged drains, dissolves organic matter, and melts away heavy grease deposits. When used properly, it won't harm piping systems, septic tanks, or cesspools. Safe packaging features a Posi-lok® seal and a child-resistant cap. Sold 12 per case, priced per quart. For professional use only.