My Smoothie King days taught me more than just how to make a good smoothie. They taught me how to clean a blender like a pro. (Adding that one to my resume.) Just after using your blender, lightly rinse with water. Fill basin about a quarter of the way full with hot water and a squirt of soap. Secure lid and blend on high for about 30 seconds. The soap and the steam will do the work. Rinse. Repeat as needed.