ZEP Root Kill features an effective formula designed to quickly dissolve the roots that accumulate in the drain, sewer pipes and septic field lines that cause pipes to drain slowly or even become completely clogged. Reviewed as a miracle worker, this septic safe drain cleaner dissolves the roots inside the pipes without any harm to the trees and shrubs. ZEP root killer for drains also helps control future root and fungus growth within your sewage system, while protrecting pipes from corrosion. This root killer for sewage lines is best used consistently as preventative maintenance.