Use monthly to overcome the destructive effects of regularly used household products such as bleach, detergents, and chemicals. Easy to use water soluble packet; just drop into your toilet monthly to add Billions of septic specific enzymes and bacteria back into your septic system. BIO-ACTIVE helps keep septic tanks and drain fields working efficiently and maximizes tank capacity. Aids in the prevention of clogs. Container includes a year supply of product. Bio-Active Septic comes in a retail jar of 12 water soluble sachets, 1 for each month of the year (1 year supply). Each monthly Bio-Active Septic sachet is suitable for up to a 1500 gallon septic tank.