Assess the problem Track down the influenced drain and extent of backup Check out if numerous drains are afflicted (indicates primary line problem) Search for seen h2o problems or overflow Basic Do it yourself Techniques Pour boiling water down drain Use plunger suitable for sink/rest room Try out baking soda https://www.kawatan.net/why-you-should-never-use-baking-soda-and-vinegar-to-unclog-a-drain/