I have used Clean n' Dull with a spinner and by hand. Clean n' Dull may be one of those substances that is better applied by hand. I have not seen a discoloration of the coverstock when I used my spinner, but I think that the heat from the spinner could make Clean n' Dull less effective.
I hope that Charlest will weigh in on this thread.
Why? enough has been said already.
But if you insist -
Clean and Dull is one of, if not THE strongest cleaners available for a bowling ball.
Because the process involves using the cleaner then using a damp paper towel to remove the remnants and then a dry paper towel to clean the ball and because of the cleaner's strength, I only use it at home, by had, with a good set of gloves to protect my hands. I only use strong paper towels, like Bounty, because I throw them away after use.
I would recommend you not use C&D at the lanes; there are plenty of good spray-on, bowling-specific cleaners that do a good job along with a micro-fiber towel and that are convenient and easy to use at the lanes. Balls MUST be cleaned at the lanes to remove the oil from the surface. If you wait to do it at home, the oil will already have been absorbed. Too late!
Normally I use C&D at home, every 9 -15 games.When I rub it on initially, I try to keep the towel in and rub one half the ball, sitting in a ball cup,for about 45 - 60 seconds; then I use a damp paper towel and then a dry one. I turn the ball over and do the same on the other half.