I had sewer back up problem and called Mr. Rooter on Sunday. One George arrived at scheduled time. Explained about snaking and hydro jetting. Scheduled service for Monday noon as it was already dark. George called and came ahead of schedule at around 10.40AM. Tried Hydro-jetting as well as snaking. Removed lots and lots of roots, but still could not open up the drain. His supervisor came and located the blockage which was very close to the city sewer line. Actually, the sewer line belongs to the county and he was not able to give an accurate estimate until he calls the county office and finds out their regulations etc. But, he did mention that couple of large trees need to be cut down, need to dig down and replace the broken (not sure how it was concluded, experience may be - will give him benefit of doubt) clay pipes with PVC and the cost will easily run upwards of 10K!!