It works fine and is not harsh on the parts . The hard part is finding it . Here in the New Orleans I could not find it although it was in every grocery store 10 years ago. I found my bottle in Florida .
by member pickelhauben
I've used the "Parsons" brand of sudsy ammonia for probably 25-years. Problem now is that they apparently don't make it any more from what I understand, and I'm guessing you might have found some "old stock" in Florida that was still on the shelf. Parsons still makes and sells their "lemon" & "household ammonia". Not sure why "sudsy ammonia" is not manufactured anymore, and I'm wondering if it had been an ingredient in the making of such nefarious things as the "methamphetamine" drug or something similar.
Apparently it can be replicated to some extent by adding a detergent to regular household cleaning ammonia, from recipes googled on the internet.
The product also works well on nickel silver fittings as well.
My experience with it is that if you have the mercury fire gilt fittings that have gone dark (like often times happens with decades old acid etched fingerprints and the likes) it does not remove the dark stains.
I would agree with Pontiac9999 with the Hagerty silver foam from the results I've seen from Brian using it. That looks like a great product. I have not tried it yet myself, however.