White camphor, tea tree, cedar oil, and neem essential oil will kill the mite and yeast, Only use 2 drops per ounce of carrier oils
. I highly suggest seabuckthorn oil
, virgin coconut oil
, and rose hip oil. Use this blend in bath, about 1 tablespoon and 1 tablespoon of borax, soak for about 1/2 hour. Then add 1-2 drops each of peppermint oil, tea tree oil and clove essential oil to his shampoo, start out with one drop and if he doesn't get a burning sensation increase by 1 drop each.