Rid-X, 48 OZ, Professional Septic Tank System Treatment, Liquid Formula Contains Billions Of 100% Natural Active Bacteria & Enzymes That Have Been Selected To Effectively Digest Septic System Waste, Breaks Down The Solid Organic Waste That Can Accumulate In Your Septic Tank, Such As Detergents, Soaps, Grease & Paper, Use Monthly Along With Regular Pumping, 6 Monthly Doses For Tanks Up To 1500 Gallons.