I didn't see that in the link I posted; Have you got a different link? I'd think once every couple years should be plenty...I'm no expert, though.
Really interested to see the results with your cat, which we know has dropped off in performance. [Insert popcorn-eating GIFhere.]
I got my Keystone in Dec, '10 but there was a couple seasons I didn't burn it, and I've split the other 4+ years between the original ceramic cat, and a diesel-foil I got for it, so maybe only two years on each cat. They are still working well. I sold the Fireview to my BIL, and he replace the original diesel-foil that was in it after 4 yrs. I didn't get a chance to burn his stove before he replaced the old cat, so I don't know how much it had diminished in performance, if at all. I'll have to ask him again about the circumstances surrounding the replacement. From what I've read here, one can expect performance to begin dropping after 3 yrs. of normal use. Sure, you could keep using it and it would still burn pretty clean through the heart of the burn, but it would be harder to light off and would drop out sooner. I don't want to put up with that for too long, especially the "slower light-off" part.
Got a link to this info? Eating away the catalyst isn't mentioned here...
The only negative involved is being someone who is incapable of following written instructions. Why would someone even attempt it, in that case? Sheesh.
Great that you were able to revive that cat. I bet it will go for a while, but keep us updated...will be interesting to know how many hours you get on that cat before it is truly kaput, and can't be saved with a bath.
I would guess the vinegar wouldn't react with the metals in the platinum group, which are not very reactive, and I wouldn't think it would affect the bond to the stainless steel either. However, I'm not chemist (but I stayed at a Holiday Inn Express, and took chemistry 101.)