No. 1 brand (based on national sales). Patented bacteria works continuously to help prevent septic backups (along with occasional pumping). 2 monthly doses. Safe for all pipes and tanks. Use Rid-X monthly to help prevent expensive septic backups (along with occasional pumping). Easy to use, and safe for all pipes and tanks. Scientifically proven to help prevent septic backups (along with occasional pumping). Over time, organic household waste like oils & grease, protein, and paper can build up, causing expensive septic backups. Rid-X contains 100% natural bacteria and enzymes proven to break down organic household waste. Used monthly, Rid-X helps prevent expensive septic disasters and helps keep you septic system operating efficiently. Contains: Bacteria cultures, enzymes, micronutrients and wheat bran carrier. Breaks Down: paper; oils & grease; protein. Carton made from 100% - recycled paper (35% post-consumer paper). Questions? 1-800-228-4722. For ingredient information, www.rid-x.com. Made in USA.