The magic bullet blades are dishwasher safe as long as you put the magic bullet blades on the top rack.
When you do wash the magic bullet blades in the dishwasher place them on the top rack and do not use the sanitize or high temperature setting.
You can put everything of the magic bullet into the dishwasher and wash it as long as you do not put the magic bullet base into the dishwasher.
I wash the blades and the other components of the magic bullet in my dishwasher on the top rack all the time and it's always got it cleaned.
Just wipe the base of the magic bullet down by hand and the rest of it can go into the dishwasher.