Fast, efficient, cleared the clog quickly. We've used Mark's RR a few times(tree roots), it's sort of an annual thing.

polite service person but this was just for preventative cleaning of sewer line. during the cleaning he broke a 6 inch blade which might cause problems in the future we're not sure. My basement stairs

We've used 3 times with emergency plumbing issues. They are always responsive, communicative and prompt.