Evaluate the specific situation Identify the afflicted drain and extent of backup Check out if many drains are impacted (indicates key line problem) Hunt for seen h2o hurt or overflow Simple DIY Ways Pour boiling drinking water down drain Use plunger appropriate for sink/bathroom Attempt baking soda + vinegar Alternative https://www.kawatan.net/how-to-find-emergency-drain-cleaning-and-plumber-services-in-etobicoke/