Customer has a clog in her kitchen sink drain with cleanout access underneath the sink inside the home. Ran a standard kitchen snake machine and was getting grease coming back but it was not clearing the clog, I used this for about and hour. I then ran the chain specialty snake down the line pulling back grease, I did this for about an hour and half to two hours. The clog has so much grease that the only way to clear the line is with the hydro-Jett, access is in the home and the area will have to be taped off to keep from flooding the kitchen. The customer would like to discuss the job with her family and will contact us when she decides to get the work done.