Customer called about a clogged kitchen sink. Using the upstairs sink caused the bar sink in the basement to overflow. Provided for an attempt to clear drain, customer accepted. Used the 100 machine and felt a blockage around 30’. Worked the area until water level dropped. Tested, sink backed up again. Found what appeared to be grease on the auger head. Wrapped auger head in tape, pushed it out to about 40’ until I felt a blockage. Worked this out to about 60’ until water level dropped. Ran both sinks for about 15 minutes, no signs of any clogging. Cleaned work area. No warranty or guarantee on drain cleaning. Thank you for choosing CPI!