This product functions as advertised; it cleans the espresso/coffee machine, and is convenient to use. It is quite expensive. I was unable to determine from either the packaging on the product samples that came with the machine or the packet of ten that is the subject of this review what the ingredients consisted of, and the first time I used one of the sample tablets included with the machine, there was a lingering odor of chlorine. One is advised that if one does not use this product, the warranty is voided. Not many choices here.
As the holdup man says in German as he's demanding your wallet, "Hände hoch!" (Hands up)