Customer called us out for a clogged sink in the kitchen sink. I inspected the sink and it backed up fairly quickly. I gave the customer multiple options and she choose to start with cleaning the p-trap. I disassembled the trap and there was minimal debris inside of it. She then choose to have a flex shaft ran down the line. I removed the p-trap and ran the cable down the line successfully clearing the blockage. I put everything back together and tested the line throughly. No more backing up and no leaks in the basement or under the sink.