Don't really know why my comment was downvoted. The point was that the instructions recommend powdered detergent and don't say anything about the ability to spray to dissolve tablets but we probably have different models.

I ruined my 14 year old one by accidentally getting popcorn kernels or lemon seeds in the motor. Otherwise, the interior looked brand new. :(

Mine is only 2 years old!

My Bosch instruction manual said to use powder.