Evaluate your situation Track down the influenced drain and extent of backup Test if many drains are afflicted (implies main line challenge) Try to look for obvious water harm or overflow Fundamental Do it yourself Methods Pour boiling water down drain Use plunger suitable for sink/rest room Attempt baking soda https://www.kawatan.net/why-you-should-never-use-baking-soda-and-vinegar-to-unclog-a-drain/