OUR BEST FORMULA.* From the #1 Brand septic professionals have used in their own tanks, RID-X Platinum helps prevent septic backups along with occasional pumping by continuously breaking down household waste. RID-X helps maintain a healthy balance of septic bacteria throughout the year in order to prevent septic backups. The natural bacteria and advanced enzymes start working immediately to break down paper, protein, oils & grease. RID-X is safe for pipes and septic systems. Always remember to use RID-X once per month along with occasional pumping. 8 fl oz is 1 monthly dose for septic tanks up to 1500 gallons. To use, simply pour the liquid down the toilet or sink drain and flush. *Based on a 21-month study vs. RID-X Powder.