Evaluate your situation Track down the influenced drain and extent of backup Examine if numerous drains are afflicted (signifies most important line concern) Search for seen water problems or overflow Simple Do it yourself Steps Pour boiling water down drain Use plunger appropriate for sink/bathroom Try baking soda + vinegar https://www.kawatan.net/how-to-find-emergency-drain-cleaning-and-plumber-services-in-etobicoke/