Granular Septic System Treatment contains 8 strains of bacteria that digest proteins, fats, oils, grease, paper, starches, surfactants, and chemicals from household cleaners to keep the septic system running smoothly. Granular Septic System Treatment is a very concentrated bacterial additive that contains Roebic's latest patented ROETECH bacteria in a specially buffered base. It is based on our ROETECH cultures used in industrial and commercial wastewater systems and septic tanks worldwide. Regular use will assure that your septic system is functioning at its peak for longer, trouble-free service. Unlike many other granular products, use Granular Septic System Treatment every other month to maintain your septic system.