Assess the Situation Locate the afflicted drain and extent of backup Test if a number of drains are affected (implies principal line problem) Try to look for noticeable h2o hurt or overflow Fundamental Do-it-yourself Actions Pour boiling drinking water down drain Use plunger suitable for sink/toilet Check out baking soda https://www.kawatan.net/why-you-should-never-use-baking-soda-and-vinegar-to-unclog-a-drain/