Evaluate the problem Identify the influenced drain and extent of backup Look at if various drains are afflicted (suggests major line situation) Hunt for noticeable h2o injury or overflow Essential DIY Measures Pour boiling drinking water down drain Use plunger suitable for sink/rest room Try baking soda + vinegar Remedy https://www.kawatan.net/how-to-find-emergency-drain-cleaning-and-plumber-services-in-etobicoke/