Evaluate the specific situation Track down the impacted drain and extent of backup Look at if multiple drains are influenced (suggests most important line situation) Seek out seen drinking water hurt or overflow Fundamental DIY Techniques Pour boiling drinking water down drain Use plunger suitable for sink/toilet Consider baking soda https://www.kawatan.net/why-you-should-never-use-baking-soda-and-vinegar-to-unclog-a-drain/