The problem is that to clean the container properly, you need to remove the cap or dispenser. Then it becomes difficult to get the cap on & off, or the dispenser starts leaking. Once I tried to clean the container without removing the dispenser. True story--the next time I went to use my smoothie maker, there were fly larvae in the dispenser. Disgusting. I was on my 2nd Back to Basics smoothie maker pro when the glass container broke. Come to find out, there are no replacement parts. I purchased a Kitchenaid 3 speed blender. Not only does it make better smoothies, in way less time--you do not even need a stir stick and it is so easy to clean. Well worth the extra cost.