They are terrible. We’ve had them to our house a couple times for roots and they would snake and leave, only to have the lines almost immediately back up again. After speaking w/local sewer utilities, I suspect they use snake lines that are much too small! As in, they use a 1 inch snake on a six inch line; if it cuts through anything at all, it only leaves a 1 inch hole through the blockage. I don’t recommend them.