Ha!
sounds like Richie's got the inside knowledge on that one;
Yeah; that Wonder Wheels stuff is terrific at eating through brake dust, in a way that water alone doesn't touch; but you can get an indication of how aggressive it is; as if you have minor injuries on your fingers whilst using it, and it gets in; it stings like F*fe.
Personally; I try and give 'em a really good clean, (the wheels), about twice a year with that Wonder Wheels stuff or something less aggressive; and then wax them; internally & externally; to fight back the worst of water-borne filth from sticking to them.
It's a lot of effort; but keeps 'em good I think.