I use Dawn dish detergent. NOT the antibacterial one, just the regular old blue kind. It's what they use to clean wildlife after oil spills and is safe to use. I just use a small amount with some warm water and rinse really well. My girls actually tolerate it very well and don't seem to mind it. One of my girls appears to even enjoy it a bit. I think she's uncomfortable and the warm water feels soothing. I was using a VERY dilute amount of tea tree oil as it has anti fungal properties. The irritation went away, but not the root problem, so I'm going to try the monestat this time.