Evaluate the specific situation Find the affected drain and extent of backup Verify if multiple drains are influenced (signifies most important line challenge) Try to find obvious water hurt or overflow Fundamental Do-it-yourself Ways Pour boiling water down drain Use plunger appropriate for sink/toilet Test baking soda + vinegar solution https://www.kawatan.net/how-to-find-emergency-drain-cleaning-and-plumber-services-in-etobicoke/