Evaluate your situation Track down the influenced drain and extent of backup Check out if several drains are affected (suggests principal line issue) Look for seen h2o hurt or overflow Fundamental Do-it-yourself Steps Pour boiling drinking water down drain Use plunger suitable for sink/rest room Try out baking soda + https://www.kawatan.net/why-you-should-never-use-baking-soda-and-vinegar-to-unclog-a-drain/