Client called us out due to their left hand master bathroom lavatory sink drain clogging up and holding water. They tried a hand snake but were unable to get any relief. I ran my small chain snake and also could not get any relief. We got the sewer camera down the line as far as we could, then located it. We found that lavatory on top floor runs all the way down and ties into the system in the basement, just behind the kitchen tie in. We discovered that entire trunk line catching all the upstairs fixtures to be completely full of grease from the kitchen line. We cleaned out a lot of grease out of the line and then used water hose to wash it out further. The line was a lot more clear of grease, but it was still backing up when I had the hose running for a minute. Using my flashlight I could see at the other end of the pipe that it is still caked with grease. Both kitchen and the other fixtures should drain normally, but sooner or later that large amount of grease left on other end of li
