Long Shot: Delonghi Magnifica Cleaning Questions

[cereal K]

*sorry - wrong board!!*

Does anyone here have a Delonghi Magnifica?

I had to have it serviced a while back (I messed up the grinder) and found someone locally who works on professional machines at coffee shops. He got it all fixed up, but recommended getting some Cafiza tablets to help clean it. 

But I can't find any info anywhere on how to use these tablets with my machine. Has anyone used them? Any ideas?

(I do descale whenever the notification light goes off - he told me that wasn't really necessary with the local water, but I still do it bc what could it hurt.)