Roebic K-37 32 Oz. Septic Tank TreatmentContains anaerobic spore bearing bacteria selected, conditioned and cultured for use in septic tanks. Resistant to soaps and detergents; they continually produce enzymes which digest protein, keep tank contents liquid and prevent over accumulation of organic waste. A single treatment is guaranteed to prevent clogging for 1 full year. Use 1 quart for each 500 gallon tank capacity once a year. %search_data%K37 Q 12