The Zep Commercial 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 root killer for sewer lines 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 protecting the pipes from corrosion. This root killer for pipes is best used consistently as preventative maintenance. Wear gloves and goggles when using this Zep root killer for safety. Pro tip: Use twice a year to remove current roots and prevent future clogs Drain opener features an effective, granular formula removes shrub and tree roots that penetrate the cracks of poorly sealed joints in pipes Safe for all drains, pipes, and septic systems Intended for drain lines and septic tanks The professional-strength copper sulfate root killer formula works on contact but will not harm trees or shrubs This Zep root killer for drains protects pipes from corrosion Features an effective formula designed to quickly dissolve the roots that accumulate in the drain, sewer pipes, and septic field lines that become slow or clogged Zep root killer for drains also helps control future root and fungus growth within your sewage system Wear gloves and goggles when using this root killer for sewer lines Size: 2 lb. Pack of 4 for multiple uses