Assess the problem Identify the affected drain and extent of backup Check out if many drains are influenced (suggests major line situation) Look for obvious drinking water harm or overflow Primary DIY Steps Pour boiling drinking water down drain Use plunger appropriate for sink/toilet Try baking soda + vinegar Remedy https://www.kawatan.net/how-to-find-emergency-drain-cleaning-and-plumber-services-in-etobicoke/