Evaluate the problem Locate the afflicted drain and extent of backup Test if various drains are affected (signifies most important line concern) Look for noticeable drinking water problems or overflow Basic Do-it-yourself Ways Pour boiling water down drain Use plunger appropriate for sink/toilet Consider baking soda + vinegar Alternative Take https://www.kawatan.net/how-to-find-emergency-drain-cleaning-and-plumber-services-in-etobicoke/