Roto Rooter Septic System Treatment, 8 Doses: * Proven to help prevent septic backup * Professional strength formula * Contains a high concentration of natural bacteria and enzymes to digest paper, fats, oils, grease, protein and starch * Safe on all septic tanks and pipes * Helps eliminate unpleasant odors and dampness in leach fields * 8 doses for tanks up to 1,500 gal * 64 fl oz