We buy Nature's Miracle by the gallon. Douse the pup and let him dry. We use a soaked washcloth for the face so it won't get in the eyes. Once dry, a bath with doggy shampoo will get it all out. If he ingested any, it takes about 3 weeks to work itself out of the system.
Sorry, I have a personal problem with the Massengil concept. I mean, really - whose girly part were so rank that someone made the connection to skunk? That is just nasty.