not sure
I am not sure that I would buy this product again. we used 6 tablets, cleaning 3 times each and there is still a ring in the center of the carafe. I had cleaned it probably about 3 months ago without using this and just using dishwasher detergent .Same results., still a ring. I  tried scrubbing the ring with a stiff brush after the third cleaning. I think I will look elsewhere the next time.
Rating: 2 stars