PureSeptic is a patented, natural biological septic & drain line treatment. Pure Septic keeps septic systems happy by unleashing billions of naturally occurring Pseudomonas bacteria that thrive on the organics found in every waste-water system. The microbial activity in the septic tank converts the solids, including fats, resulting in clear effluent into the leach field. PureSeptic is much more powerful than other leading brands in that its bacteria actually eats paper, soap etc. which disappear without any remnants left in the septic tank water system (97% pure water). Many other brands basically "emulsifies" it - like the BP oil spill in the Gulf of Mexico - the oil is still there, you just can't see it.
Each bottle is a 16 month supply for a 1,000 gal septic tank, which is a cost of only $3.12 per 4 oz. monthly treatment. PureSeptic can also be used as a treatment for slow drains.
With any live microorganism you should only buy what you can use in a two year period. Any bacteria based product-liquid or powder will degrade over time.
Each 64oz bottle of PureSeptic is packaged with 16 treatments for a 1000 gallon septic tank. If your tank is larger use an additional 4oz per-1000 gallons-per month.