We had a complete stoppage of our drain, which caused any of our bathroom wastes to back up in the basement (ick!). Roy was able to come the next day, and cleared out the "elbow" that goes between the house drain and the main line outside. He informed me that the elbow was old and probably could use replacement, but as long as clearing it out works, I could probably go without (since replacement would be thousands of dollars).
He was honest, effective, and with extremely reasonable rates. I would wholeheartedly recommend him to anyone!