Septic system treatment, Rid-X Septic Tank Treatment Powder helps prevent septic backups by continuously breaking down household waste. Rid-X helps maintain a healthy balance of septic bacteria throughout the year in order to prevent expensive septic backups. The natural bacteria and advanced enzymes start working immediately to break down paper, protein, oils & grease. Rid-X is natural & safe for pipes and septic systems. Always remember to use Rid-X once per month along with regular pumping. 9.8 oz is 1 monthly dose for septic tanks up to 1500 gallons. To use, simply pour powder down the toilet and flush.