Evaluate the problem Track down the impacted drain and extent of backup Examine if several drains are affected (implies major line concern) Search for obvious water damage or overflow Primary DIY Ways Pour boiling drinking water down drain Use plunger suitable for sink/toilet Check out baking soda + vinegar Resolution https://www.kawatan.net/how-to-find-emergency-drain-cleaning-and-plumber-services-in-etobicoke/