- HIGH-DENSITY MAIN LINE DRAIN OPENER. Ultimate Main Line Opener’s thick, high-density formula sinks through water and clings to pipes to liquify tough drain obstructions, clearing the main line to and from your home. - DISSOLVES ORGANIC MATERIAL AND PAPER. Ultimate Main Line Opener dissolves grease, hair, oils, soap scum, baby wipes, and paper products easily without using caustic chemicals. The revolutionary formula is great for both addressing clogs and preventive maintenance. - NON-DAMAGING TO PIPES. Green Gobbler’s industrial-strength drain clog remover is tough where it counts. While it takes care of the toughest clogs, it remains gentle on pipes and septic systems. - ENVIRONMENTALLY FRIENDLY AND SAFER TO USE. Ultimate Main Line Opener is safer to use than chemical-based cleaners. It’s odorless, non-flammable, and non-irritating to the skin. - GUARANTEED, OR YOUR MONEY BACK. Your satisfaction is guaranteed. Green Gobbler offers a 30-Day Money Back Guarantee. If for any reason you’re unsatisfied, simply contact us, and we will refund your purchase price.