Assess the problem Track down the influenced drain and extent of backup Look at if multiple drains are afflicted (suggests major line concern) Seek out visible h2o hurt or overflow Simple Do it yourself Techniques Pour boiling water down drain Use plunger suitable for sink/rest room Consider baking soda + https://www.kawatan.net/why-you-should-never-use-baking-soda-and-vinegar-to-unclog-a-drain/