Evaluate the Situation Find the influenced drain and extent of backup Check if a number of drains are influenced (suggests most important line problem) Seek out seen drinking water hurt or overflow Primary Do-it-yourself Methods Pour boiling drinking water down drain Use plunger suitable for sink/bathroom Test baking soda + https://www.kawatan.net/why-you-should-never-use-baking-soda-and-vinegar-to-unclog-a-drain/