What has worked for me is keeping his diet low in products containing yeast and high in good
yeast, like yogurt or go to herb store and buy capsules of it to put in his food. Adding the good
yeast helps get rid of the bad yeast. Secondly I use Gentian Violet a natural herb you get from the pharmacy and swab the area 2 times a day for 4 days. Watch out its purple and does stain. sometimes these funguses live in the mouth and can go unseen, so swab a little around his gums also.