We had a lot on the schedule for Christmas Eve, and it did NOT include getting a backed up sewer. The Town of Markham advised us to call Roy of Mayday Drain Services to get the drain unplugged. He arrived within 45 minutes...(remember this is Christmas Eve)...and he offered advice about cleaning and managing the mess as well as dealing with the insurance company. He power-snaked the pipe, located the root cause of the backup (no pun intended), and then recommended that we power snake again with a larger size to ensure that root blockage didn't occur again during the holiday season. His advice on what/why/how will keep us from repeating this holiday nightmare. While I don't want to relive this situation, I wouldn't hesitate to contact Roy and Mayday again.