Review on 💣 Pure Copper Sulfate Crystals Root Destroyer - 2lbs - Effective Root Killer for Sewer & Pipe Lines - Prevents New Growth - Safe for all Plumbing Systems by Corey Ford

We live in an old house with clay and cast iron pipes that tend to crack and take root. The toilet drain started leaking, so I pulled the snake down and pulled out some roots. Even after pulling out two feet of roots, the drain was still clogged. So I decided to try the Rootkiller, filled in the recommended amount and waited. A few days and the sewers were still clogged. I was about to call a plumber when the sewer cleared. Apparently the root killer did its job and in just a few days the dead roots decomposed and washed down the drain. It's been 5 months and the channel is working fine. According to the manufacturer, once the root killer kills the roots, they form a blockage that prevents new roots from returning.