We have our machine about every 2 months with two tablets Descaling about 3 dH.
We here in the region a very high calcium content have 12 to 14 dH additionally we use a water filter PearlCo Astra to prevent hard water comes into the fully automatic machine - I can only recommend.
The Pakungsinhalt is 6 tablets and enough therefore for 3 Entkalkungsdurchläufe as more and 2 tablets are needed.
Price is really great - much cheaper than commercially.
I can only recommend the purchase - 5 ***** star