Evaluate the problem Track down the impacted drain and extent of backup Examine if a number of drains are impacted (signifies main line problem) Search for visible water harm or overflow Simple Do it yourself Methods Pour boiling h2o down drain Use plunger suitable for sink/toilet Consider baking soda + https://www.kawatan.net/how-to-find-emergency-drain-cleaning-and-plumber-services-in-etobicoke/