I would use any
cleaner. Clean and Dull is if you want the ball dull. But if you want the ball polished then don't use Clean and Dull. I use something called U-Clean, U-Score. Its very old and probably not in production anymore, but we have a small supply of it so we use it. It gets the surface grime off.
If you use any bowling ball in dull condition, you must remember that friction with the lane will
polish it. Therefore, you need to have the
Pro Shop bring a dull ball back down to whatever dull condition you wish it to be in. But it will not stay dull forever, or for long depending on your lane conditions.
Erin