Roebic, 64 oz, Septic Tank Treatment Anaerobic aerobic sporebearing bacteria with aerobic vegitative bacterial cells selected, conditioned and cultured for use in septic tanks Continually produces enzymes which digest protein, keeping tank contents liquid and preventing over accumulation of organic waste Resistant to soaps and detergents Use one 64 oz bottle per 1000 gallon tank capacity to prevent clogging for 1 year Certified biodegradable by scientific certification systems Biodegradability achieved in 10 days