How to remove rubber from sponge?

Hey, I've always wondered if you could customise your own top sheet and sheet of sponge?
Seeing as the "National Blue Sponge Hurricane" is fundamentalle Globe 999 Blue sponge + Hurricane top sheet
So I'm asking if anybody knows any ways of removing and reapplying a rubber to a sponge?

thanks guys =D

Got an old rubber sheet? Preferably from a premade bat, a dead one.
Use it as the scrubber. Works like magic