There’s a lingering recommendation in the cloth diaper community that a few drops of tea tree oil will remove yeast in cloth diapers.  We are not aware of any study showing that tea tree oil is effective in removing yeast from cloth diapers when used in a washing machine in very low concentrations. We do know that tea tree oil has been studied as an effective remedy for a few common human ailments including acne and athletes foot.  In the published studies I uncovered, effective treatment involved a concentrated topical solution ranging from 5-100% concentration.  To achieve this concentration in a laundry environment