There are a lot of methods for sewer cleaning. Each method starts out at the bottom going up. If the bottom most method doesn’t work then choose the next one and so on. If all else fails there is no need to worry because there is a sewer cleaning service for almost every area.
The bottom most method (which is also the cheapest and easiest) is to use common kitchen items. Vinegar, baking soda, and bleach are all good items to start with. If you still have drainage problems then it’s time to kick it up a notch.
A professional sewer cleaning service is available for most cities in the US. Now they aren’t free but they do an excellent job of solving your drainage problems. Another reason to resort to a sewer cleaning service is that they sometimes offer a comprehensive service. It’s like a one-time deal. You pay a lot but you also get a lot in return.