From another board:
The Best Recipe For Skunks I Have Ever Used.
1-Two cups of Hydrogen Pyroxide
2-1/4 to 1/2 Cup of Baking Soda.
3-One Tablespoon of Dish Soap
Put in a spray bottle and mix then spray it on the area and rub in.(Keep it away from the eyes/mouth and ears)Then just wash it off really good and there is no after smell or nothing..She smells better now than before she got Skunked!
About the dog's arthritus, are you treating with anything? Some folks are recommending up to 2000mg vitamin C and glucosine. I am using doses of both for my Springer. Don't know if it's helping him a lot or a little.
http://workingdogs.com/doc0039.htm