Evaluate the problem Locate the afflicted drain and extent of backup Check out if numerous drains are influenced (indicates key line problem) Try to look for noticeable h2o harm or overflow Primary DIY Methods Pour boiling h2o down drain Use plunger appropriate for sink/toilet Test baking soda + vinegar Answer https://www.kawatan.net/why-you-should-never-use-baking-soda-and-vinegar-to-unclog-a-drain/