QuestSpecialty DIGEST PLUS is a USDA authorized concentrated blend of 7 living aerobic and anaerobic bacteria. These seven strains of enzyme producing bacteria were specially selected and adapted for their ability to produce large amounts of amylase, protease, cellulase and lipase enzymes, important in degrading common sanitary wastes. Lessens need for septic tanks, cesspools, and Imhoff tanks.The bacteria are considered new generation and are impervious to bleach, disinfectants and acids. This product can be used successfully to quickly degrade wastes and reduce odors. Produces en-zymes necessary for degradation of soils, organic oils, and food by-products from grease traps, septic tanks, down pipes, drain lines, garbage disposals, portable toilets, recreational vehicles, sump pumps, marinas, wet wells. Contains no acid or caustics and is non-polluting. This product can also be used after treatment with sulfuric acid drain openers to prevent future clogging and residual hydrogen sulfide odors. Excellent to use where uric acid (odor of urine) is a problem. Will actually eradicate odors. Note: This product performs best within a pH range of 5.5 8.5. Optimal temperature range for maximum effectiveness is 54 113F; effective up to 212F.Excellent for use in hotels/motels, restaurants, meat markets, homes, schools, institutions, marinas, homes and office buildings. Quarts (12x1), Gallons (4x1), Drum (55 gal), Pails (5, 6 gal)H-0, F-0, R-0, P-A