My Tassimo runs every day and the hard water with us makes it necessary that often needs to be descaled my machine yet. The descaling Bosch work as they should. After each 20 minute cleaning my Tassimo running again some time without any problems.
Unfortunately, the original tablets are very price-intensive and I've tried already much cheaper products from the drugstore. Even with this to get to the same success.
4 of 5 stars because I can see the price to be very decisive.