The following are things that are proven to aid in prolonging system life By having proper Maintenance preformed on the septic tank. Not overloading the system with water, it was designed to only handle so many gallons per day. i.e. spread wash out through the week. DO NOT add any thing to the system that you normal would not put down the drains or in the toilet. DO NOT use septic tank additives, they do more harm then good. DO NOT flush sanitary napkins, diapers, paper towels, coffee grounds or cigarette butts.