If you want to keep those calcified detergent stains off your stainless steel, then all you need to use is the new Comet or Ajax on a regular basis before the deposits build up too much.
We used to use Barkeeper's Friend too, but a few years ago they changed the formulation on Comet first and then Ajax to one that is "scratch free".
They're both now almost identical to BarKeeper's Friend, but cheaper and very easy to find in any supermarket.
If you have heavily built up white calcified deposits on your machines, you can remove them with HydroFLOURIC Acid (not hydroCHLORIC acid).
Hydroflouric acid is sold to dry cleaners as a powerful rust remover, but it is hazardous to use.
It will however, remove those deposits like magic in one swipe.
(Hydrochloric acid is sold as drain cleaner and will NOT work on these stains.)
If you do want to risk using this acid, be sure to have very good ventilation, no customer's in your mat, and wear at least double gloves (if not triple gloves), an apron and good eye and arm protection.
You also should wipe again with a fresh water rag, and finish up with a dry rag.
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Paul....
Like I always say...."It all comes out in the wash"....
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