Replaced kitchen faucet and stop valves. Customer asked about getting a dishwasher replace. Notified her we don’t do dishwashers, but we could add the tie in that the Home Depot installers would require to install a new dishwasher for her, as they will not install one if the drain and water connections are in the crawlspace. We also noticed the drain outlet under the sink was very high, and the homeowner stated the drain frequently builds up grease, as all of the tubular piping was working as one giant p trap. We received approval to cut out the piping under the sink, and reroute it down through the floor and connect it back into the existing plumbing. Once I cut out the old tie in in the basement, I noticed the entire 3” pipe is packed full of grease. Attempted to snake it, but the grease was rock hard and I was unable to get through it with my smaller snake. Kitchen drain line needs to be replaced, as well as the laundry drain that connects into it as it is severely back pitched. Lef