Evaluate the specific situation Track down the afflicted drain and extent of backup Verify if a number of drains are influenced (signifies most important line issue) Hunt for seen drinking water hurt or overflow Standard DIY Ways Pour boiling drinking water down drain Use plunger appropriate for sink/rest room Check https://www.kawatan.net/why-you-should-never-use-baking-soda-and-vinegar-to-unclog-a-drain/