So this is my review of this Cascade Powder Dishwasher Detergent. I have been using this type of dishwasher detergent for quite a while now. I have no issues at all with this causing any spots or marks on my dishes. The only issue that I had was the fact that I bought this not thinking and did not pay attention to the size of the packaging. So for the $10.00 I spent I got a box of detergent that I can pick up for 3.99 at the store. A little pissed off about that. But my fault for not paying attention to what I was buying. Pay attention to the size of the products you order folks. For this price I was under the impression that I would be getting the extra large box. Not the case! This is the small 45 oz box and I could have bought 3 of these boxes for the price I paid. Big lesson learned!