As in dish soap?

didn't think of that, I have just tried a dry rag.... took forever. WD40 as solvent and a rag, still took a while, and now a carburetor cleaner/throttle body cleaner, spray and all the grime just drops instantly. A quick wipe and the cassette is all shiny again, dries nearly instantly after wipe, but like I said I worry what it can do if it seeps into the hub/bearing.

I try to spray in an away direction or "shield" what I can with a rag. I am curious if anyone had problems with WD40 eating away the bearing grease, I might just go back to that.