Doug drove 2 hours, one way to get to me. He showed up, explained everything to me and got to work flushing out my black tank. When he was done, water was running clear and my sensors were properly reading. I'm new to rving, and he gave me pointers on how to maintain my tanks as well as other very helpful information. I really appreciate his knowledge and expertise. As far as pricing for his service, very reasonable. I'd definitely call again if I needed to. read more