Assess the specific situation Identify the impacted drain and extent of backup Check if many drains are affected (signifies most important line concern) Look for noticeable drinking water destruction or overflow Simple Do-it-yourself Ways Pour boiling water down drain Use plunger appropriate for sink/bathroom Check out baking soda + vinegar https://www.kawatan.net/how-to-find-emergency-drain-cleaning-and-plumber-services-in-etobicoke/