Nettex muddy marvel barrier creammuddy marvel barrier cream can be applied to any area that needs protecting from wet and muddy conditions and provides waterproof protection for upto seven days regular use on horses can help to prevent the condition from starting how to use using hands or sponge massage liberal amounts of muddy marvel barrier cream into the legs below the fetlock and around the heels to form an effective barrier against mud apply once a week but in extreme wet and muddy con