What Deb said.

Also, I have to be careful to hold the chain cleaner in line with the chain or it acts like a lever and starts pulling the chain off. Pedalling backward slowly AND holding the cleaner parallel to the line of the chain was a challenge for me on the order of patting the head and rubbing the tummy at the same time.

I had to monkey around a little before I found a way to do both at once. When the chain started rubbing like it was out of whack, I stopped pedalling and let go of the cleaner. Without me holding the handle, the cleaner lined up just right. Then I tried to keep it lined up that way as I stabilized the handle again by bracing my elbow against my waist. SKnot couldn't hold the cleaner steady and pedal, so one of us holds the cleaner and one of us pedals when we do his bike.

I still love that Park Tool chain cleaner. It's getting a little worn at the sponges, but still works great. I found it to work better with soapy water than with Chain Brite. And the Boeshield works MUCH better when I've cleaned the chains with soapy water rather than Chain Brite. (but Chain Brite still wins the Nice Smell award!)