QT Septic Tank Treatment, Anaerobic Spore-Bearing Bacteria Selected, Conditioned & Cultured For Use In Septic Tanks, Continually Produces EnzymesWhic h Digest Protein Keeping Tank Contents Liquid & Prevent Over Accumulation Of Organic Waste, Resistant To Soaps & Detergents, 1 Quart Per 500 Gallon Tank Capacity Is Guaranteed To Prevent Clogging For 1 Year.