Absolute easiest and most effective…I tell all my trim clients to use it:
1 Part - Simple Green Pro 3 – it’s anti-bacterial, anti-fungal and anti-microbial. Bottom shelf on the cleaner aisle in Home Depot
10 Parts Water
Pick and brush the hoof out very well. Soak for 10 - 15 minutes. For severe cases, soak 3 times a week.
In between non-soak days, pick & brush out well and spray copiously with Athlete’s Foot Powder Spray. It’s cheap and effective. Doesn’t kill good tissue. This way you stop the cycle of dead tissue, which invites bacteria, which invites yeast.
Once the hoof is healthy again, just keep up with Athlete’s Foot Powder Spray as needed.
Also helpful is to remove as much sugar from the diet as possible. Yeast loves and dines on sugar!