I've found that coconut oil and grapefruit seed extract seem to do best at killing the yeast in my experience.
Also,
Consider Amalgam dental fillings and heavy metals. Yeast and heavy metals typically go together. I was unable to start getting rid of the yeast in my body until I got rid of all my Amalgam fillings and started chelating for heavy metals. It will keep growing back if you have a "heavy metal" problem until you address the metals.