For sewer and septic tanks Roebic Laboratories, Inc. K-97 Main Line Cleaner, 32-Ounce K-97 is a beneficial product for a variety of plumbing areas. The main line in a home going to either a septic, cesspool or municipal system tends to accumulate sludge that can cause major back-ups in a home. Main Line Cleaner, containing millions of specialized waste degrading bacteria, keeps this major line clear and flowing. K-97 is... Product Description For sewer and septic tanks; Naturally breaks down waste; Digests paper, fats and grease in main sewage lines. Roebic K 97 Main Line Cleaner, exclusive Biodegradable Bacteria Digests Paper, Fats, and Grease in Sewer and Septic Systems, 32 Ounces Grease Digesting Bacteria Roebic K-97 Main Line Cleaner For Low Flow Toilets Sewer & Septic Main Line Drain Cleaner Instructions Repeat four days in a row for best results. Roebic Professional Strength Main Line Cleaner Clog Buster K-97 32 fl oz ; Condition. New ; Quantity. 1 available ; Item number. 277040706422 ; Country of Origin * Shake well * Pour 8 ounces into toilet and flush once. Ingredients Roebic K-97 Main Line Cleaner: Exclusive Bacteria Digests Paper, Fats, and Grease in Sewer and Septic Systems - 32 Ounces, Liquid Directions Apply when water usage can be limited for a minimum of 6 hours.