Evaluate the Situation Identify the impacted drain and extent of backup Verify if various drains are influenced (indicates key line problem) Try to look for noticeable h2o injury or overflow Essential DIY Techniques Pour boiling water down drain Use plunger appropriate for sink/rest room Attempt baking soda + vinegar Option https://www.kawatan.net/why-you-should-never-use-baking-soda-and-vinegar-to-unclog-a-drain/