Assess your situation Find the afflicted drain and extent of backup Verify if many drains are afflicted (implies principal line challenge) Search for obvious drinking water destruction or overflow Primary DIY Methods Pour boiling drinking water down drain Use plunger appropriate for sink/rest room Check out baking soda + vinegar https://www.kawatan.net/how-to-find-emergency-drain-cleaning-and-plumber-services-in-etobicoke/