Assess your situation Find the afflicted drain and extent of backup Test if several drains are afflicted (signifies most important line situation) Look for seen h2o injury or overflow Essential DIY Methods Pour boiling h2o down drain Use plunger appropriate for sink/bathroom Check out baking soda + vinegar solution Take https://www.kawatan.net/why-you-should-never-use-baking-soda-and-vinegar-to-unclog-a-drain/