Portable Blender for Shakes and Smoothies, 14 Oz BPA-Free Travel Cup

I think what helps to clean this more efficiently is to wash it out with hot water immediately after finishing your drink. What I end up doing is filling it with hot water half of cup and shaking it up and down with the lid on facing downward into the sink. This minimizes splashing and you get the shaking that removes residue from the blade area. The only negative is that it will start leaking from the bottom of the cup when the gasket wears out. It’s not a huge leak but expect to dry it with a towel or paper towel after each use. For $15 from Amazon Warehouse, it’s a good deal. Definitely don’t buy it new at $20, buy something else. UPDATE: I figured out why the cup leaks from the bottom. If you constantly fill it with difficult foods to blend and jam it up, the bottom assembly will eventually shift from the normal position and pop out. You can see the teeth from the bottom where it locks in with clips, but you have to make sure those clips are in between the opening grooves. when you jam it up, the bottom shifts to those opening grooves and the entire blade unit will pop out (and cause you a leak). you can repair it yourself with automotive tool, but it’s better to avoid it by blending soft foods.