Evaluate the problem Locate the afflicted drain and extent of backup Check out if numerous drains are influenced (indicates key line problem) Try to look for noticeable h2o harm or overflow Primary DIY Measures Pour boiling h2o down drain Use plunger suitable for sink/toilet Consider baking soda + vinegar solution https://www.kawatan.net/how-to-find-emergency-drain-cleaning-and-plumber-services-in-etobicoke/