Don't use iodine, dip a cotton swab in hydrogen peroxide and wipe off pus and dead skin. Expose the red meat, and then apply the scald ointment. Forgive me a little, and you can let the dog go, so it doesn't matter if the dog licks it off by itself.

Be sure to clean up the infected ones, or they will continue to be infected.

The next day, if there is no pus, rub it once every three days. If there is pus the next day, keep rubbing.

Generally speaking, it will scab in a week. Don't worry at this time, it will be fine.