Assess your situation Track down the affected drain and extent of backup Look at if several drains are afflicted (signifies most important line concern) Try to look for noticeable drinking water damage or overflow Standard Do it yourself Actions Pour boiling drinking water down drain Use plunger suitable for sink/rest https://www.kawatan.net/why-you-should-never-use-baking-soda-and-vinegar-to-unclog-a-drain/