Use something milder like Orvus paste, or the same shampoo you use to clean
your horse.
I raise sheep for the wool, which I spin, weave and felt. Over and over
again, people who have bought my stuff for a person hypersensitive to
chemicals have ruined it by washing it in a solution with fragrance and
harsh cleaners.
Take no chances with a girth that is going to be on your horse for hours;
wash it in the most gentle stuff you can get.
Harpy -aka Tara Wheeler
"Suppose we have only dreamed, or made up, all those things. (I)n that
case, the made up things seem a good deal more important that the real
ones. We're just babies making up a game, if you're right. But four
babies playing a game can make a play-world which licks your real world
hollow. That's why I'm going to stand by the play world."
Puddleglum from C.S. Lewis' 'The Silver Chair'