I asked Mr. Rooter to come to a home a I property manage in London, ON. They arrived on time, were pleasant and fixed the pipe. In this case, the pipe had a clog and was not allowing water to flow to the basement bathroom. The problem was in a part of the pipe near an exterior wall. A small portion of the wall was removed, the pipe was fixed and the wall was restored. They left a very small opening in the exterior wall however. During a night that reached below minus 20 Celsius (common in London) the cold air blowing on the pipe from the small hole caused the pipe to freeze, expand, BURST and flood the basement, which was filled with the electronic and sentimental valuables of my tenant. Never again will I use this company.