FINDING the powdered Massingill douche is the trick. I have a box of it that I hoard for skunk emergencies. I don't think they even make it anymore.
True story about this stuff:
My boss's neighbor was a hairy German guy (when I say hairy, I mean he had a PELT!). He was out watering his vegetable garden at dusk and surprised a skunk. Since he was only wearing shorts and sandals, he took the full blast in the chest.
He hosed off the worst of it immediately, then headed for the shower. Soap and water did nothing. Tomato juice did nothing. He was looking for the bleach in the laundry room when his wife came home. Eyes watering, she told him to get back in the shower and she would mix something up that should help.
She mixed up two batches of the Massingill powder and said, "Pour this all over you and wait a few minutes, then rinse it off".
They went to a party that night and no one mentioned any odor, but he said it was stuck in his nose for several days.