One benefit of being a company with British roots is that we really do understand MUD!
Does your horse get like this?
Fix this from the inside out with Fight Back - powerful immune support.
Don't trim the feathers off unless you need to. The hair is designed to keep water and mud away from the skin.
Don't pick off the scabs - they are nature's Band Aid.
If you have to expose the skin like in the picture above spray with an appropriate anti-bacterial sanitiser like Hibiscrub.