Rational Care Tab - 56.00.562 - Pack of 150: Care Tab for iCombi Pro, iCombi Classic and SelfCookingCenter with Efficient Care Control: Highly effective care products ensure active protection and will significantly extend the service life of your cooking system.  Special scale-dissolving ingredients contained in the care tabs prevent limescale from building up in the first place.  Using the care tabs guarantees maximum operational reliability at all times, without a water softener and time-consuming descaling.