Evaluate the problem Track down the influenced drain and extent of backup Test if various drains are influenced (signifies primary line problem) Look for seen water destruction or overflow Standard DIY Techniques Pour boiling water down drain Use plunger appropriate for sink/rest room Attempt baking soda + vinegar Option Take https://www.kawatan.net/how-to-find-emergency-drain-cleaning-and-plumber-services-in-etobicoke/