Roto-Rooter Build Up Remover prevents grease build up that can cause slow running drains. This grease fighting, natural enzyme formula was designed to coat pipe walls and eliminate build up before a standing water clog forms. The product removes unpleasant odors, leaves a fresh citrus scent and is great to prevent septic system backups. Use monthly to prevent clogs from forming. Roto-Rooter Build Up Remover is safe on all pipes and septic systems. Works Immediately To Eliminate Build Up Before A Clog Forms!