I think the expert you need to ask here is our very own (NY multipiper) “Pipey.” No one keeps his/her pipes clean and shiney like Pipey. With regard to exactly what he uses, I’ve seen him use a Brasso type product on the keys and word on the street is that he has his own mixture of something that includes (I’m not joking here) seagull poop. Maybe he’ll chime in on this and even include a photo of his sparkling Gallagher 3/4 concert set.
“Brasso” (and any other polish containing ammonia) is bad juju for your pipes. You’re better off going using “Flitz” or “Cape Cod Cloths,” neither of which, to the best of my knowledge, contain avian fecal matter.
Well, I read on this very forum that cat pi$$ has certain reed-regenerating properties. I don’t know how it works, but I imagine you’d need a highly trained cat.