Granular Septic Tank Treatment 25 LBS: This is the same formula your municipalities use. You cannot get this product at your local big home goods store. This product is perfect for unclogging drain lines and grease traps that are obstructed with grease, oil, fat, hair, paper products, soap scum, baby wipes, feminine products, food, cigarette butts, coffee grounds, organic waste, etc. Also, when this material enters the septic tank, it turns the usual suspects into a biodegradable liquid that flows out of your system. This is achieved by keeping the walls of the septic tank, drain lines, and fields clear from obstructions. Drainage will be at maximum capacity, thus reducing intervals of costly pump outs. Will also deodorize and get rid of scum blankets. EPA approved. Registered in your state.