Professional plumbers will come to your house and clear out your drains. Usually, you call in a clogged drain, and they simply clear that clogged drain. When the snake gets rid of the clogging particles, water flow is then restored to your drainage system; yet, all the clogging particles still remain inside your pipes. For most household sewer lines, it's as easy as cleaning a window screen. It does take more time, though. For larger sewer lines, it's usually best to call in a plumber to do the heavy-duty cleaning work. A good plumber has tools for the job including high-pressure jetting, drain cleaning snake augers, toilet plunger, pressure washers, and more. These tools help ensure no "dirty" pockets are left behind. Also, a good plumber knows how to test your drainage and fix any problems that may arise while cleaning out your pipes. Another type of drainage problem that must be addressed by a professional plumber is a blockage in the pipe(s) that leads to your se...