Made for the Baby Brezza Bottle Washer Pro and all other brands of Bottle Washers, these descaler tablets remove mineral build-up and extend the life of this powerful all-in-one cleaning machine. They are baby-safe, non-toxic, hypo-allergenic and fragrance-free. Use 1 tablet to descale machine. It's recommended to descale the machine after every 20 Wash Cycles. If you have hard water, you should descale more frequently. Contains 20 individually packaged tablets.