Dave from DAP is very dependable. Each time we have had plumbing issues at our HQ, we call him directly. DAP has (or has access to) every cutting-edge plumbing tool imaginable and they are willing to do almost any type of contractor work (though, in transparency, we have only employed Dave for plumbing issues). Dave is polite and does not beat around the bush. He is knowledgeable, experienced and never fails to meticulously clean up after his work before he departs. Speaking of, Dave has never left us without ensuring that our problems were completely resolved. That kind of service is seemingly unheard of in our current age. Thank you Dave. We, 100%, absolutely recommend DAP Sewer and Drain for plumbing issues if you're in the south western region of Pennsylvania and require professional help.