http://www.actionridertack.com/p-307-kookaburra-wash.aspx - We get asked all the time, "What's the best way to clean a saddle pad?" We like to recommend Kookaburra, and not just because we sell it. We recommend it because it's great!
Kookaburra is made with tea tree oil making it effective and yet gentle on your saddle pads, girths, blankets, etc. Plus, it smells great too!