Will only use Drainmaster. Had a leaking check valve on a lift toilet. I was out of state. Called Rich and was scheduled right away by Olivia and Justin who Listened and reassured and found a hole in the technician’s busy schedule. Jeffery the technician knew exactly what to do. What I imagined would take hours Jeffrey accomplished in one. Clean up was above and beyond. Great itemized bill sent to me as soon as he was done. Thanks drainmaster you saved the day!