I just started using Clean and Dull on my particle balls, and even for a skeptic like me, it seems to actually make a difference.
My old way of treating my equipment was a dishwasher, then hitting it with Simple Green on a Scotchbrite pad, but the end-result was minimal. In fact I thought it was the ball dying.
Then I got talking to Del Warren about it and he recommended trying the Clean and Dull. Again, as a skeptic, I figured it was just a sales pitch, but someone else also recommended it so I tried it.
Bottom line, it seems to work. My ball has more life than it has in awhile, so Clean and Dull is going to be a regular part of the ball preparation.