Evaluate the Situation Find the affected drain and extent of backup Examine if several drains are affected (suggests primary line difficulty) Try to look for noticeable h2o injury or overflow Basic Do-it-yourself Methods Pour boiling water down drain Use plunger appropriate for sink/rest room Attempt baking soda + vinegar Alternative https://www.kawatan.net/why-you-should-never-use-baking-soda-and-vinegar-to-unclog-a-drain/