Rid-X 24 oz. Professional Septic System Additive Liquid & Drain Maintainer. It contains high quality natural enzymes that digest fats, protein and paper, helping break down organic waste to keep your septic system running smoothly. This biodegradable and chlorine-free formula is safe for garbage disposals. Simply pour RID-X liquid down the toilet and flush. There is no need for complicated mixing, waiting, or cleaning up. Using RID-X once a month will help maintain a healthy balance of bacteria in your septic tank throughout the year. Always remember to use RID-X along with regular pumping.