The chemicals can remain in the pipe and cause severe chemical burns to the plumber when they open the line.
A clogged main sewer line is one of the most frustrating plumbing emergencies a homeowner can face. Unlike a slow sink drain, a blocked sewer line affects your entire house—water backs up in the lowest tub, toilets gurgle, and drains empty slowly. how to unclog a sewer line with chemicals
Use enzyme cleaners for maintenance and slow drains. Use caustic gels sparingly for partial clogs. For a fully blocked sewer line—skip the chemicals and call a professional. Your safety (and your pipes) are worth it. The chemicals can remain in the pipe and