Upon arrival customer had a back up in kitchen sink. We ran k60 sewer machine through the washer/kitchen stack to relieve blockage. We pulled up grease clumps annd a chunk of pipe lining material. After testing a few times drain became clogged again. We cleared drain again and pulled up a smaller piece of pipe lining material as well as grease, followed by more testing to have it clog again. This time we ran camera to view any imperfections in pipe to find large amounts of grease build up. We ran spade head to relieve blockage and break up the grease we assured customer if they do not do a jetting this will most definitely happen again. At this point moving forward there is no warranty on drain cleaning and a jetting service will have to be preformed. Estimate provided for jetting main line through washer/kitchen stack.