Bleach, pervinox, detergent - soak and wash in any or all three of these. Also remember that saddle pads must be washed. If the horse has fungus, do not use the same saddle pad on other horses
soak in bleach then wash well with dawn dish soap
Just wash them and put fungaway on them.
Bleach water. And vinigar
you can soak them in warm bleach water and let them soak in that