I'll chime in for using the Mr. Clean sponge. I bought the mop one, which comes on a long handle. Let me tell you... no scrubbing or elbow grease needed. It is such a simple solution, we wonder why we ever did all of that scrubbing. LOL
I find that it also helps to take a towel and blot the fur that has been exposed before washing with the de-skunking mix. This helps to get a lot of the initial oil off before it penetrates. Make certain not to rub the towel over other parts of your pet, otherwise you will just be spreading the oil to uninfected parts.
Yes, my boy gets skunked at least once a season. He's always looking for a new playmate. LOL