Clogged Sewer line, Sewer cleaning, Stopped Sewer, Sewer blockages, Snake sewer,Clogged sewer pipe, Clogged sewer A thin walled corrugated black plumbing pipe is popularly used in most residential yard drainage. The usual problem with this type of drainage pipe is that it usually does not hold up over time and often collapses upon application of any substantial weight. Tree roots can also penetrate the pipe easily. Once this pipe is clogged, there are only slim chances of clearing the line. As shown here, Mock Plumbing was able to clear the drainage and pulled out a bagful of tree roots by using an electric snake.