David and Scott, they are the best! They not only work well individually but great as a team. They were recently out to my home originally to unblock and issue from my house to the street that effected both my toilets on the main floor. The next visit they corrected an issue that would have become a bigger issue if they had not put in a new vent. David, also went through my house and did a complete assessment from the top floor to the basement. He explained each concern that he found. I would highly recommend both David and Scott. They are true experts at what they do besides they are pleasant to deal with.