Customer called us out for a clogged kitchen sink in the kitchen sink. On arrival customer told me it was most likely food waste. He had also removed the p-trap and the right arm of the waste line the put Draino down before calling us. Left sink was not having any clog but the right was. I checked pipe with a light and saw it was only a small area that was clogged. Due to draino I was unable to take the waste arms apart. I used a sink plunger to quickly clear the one problem area. I also recommended Endure for the customer for any grease build up and to maintain the pipes from the kitchen sink. Customer did not want me to look at his water heater or test house pressure.