Smoothie blenders, like all-in-one blenders and food processors, need special cleaning and more attention to detail in order to thoroughly care for them. Most smoothie blender parts can be cleaned in the dishwasher, such as the cups, blades and lids. Ensure proper rinsing, especially around the blades where food can get stuck, before placing it in the dishwasher. The base of a smoothie blender should be wiped down to remove all drips and stickiness.