Thank you so much for the Listerine advice. I mix equal parts of coconut oil and Listerine (the blue one) and apply it once a day to Fred. His rash has cleared up and his constant scratching is over.I just posted something last night about what to use for this. It is listerine and babyoil. Mix it equal parts. the listerine kills the fungus/yeast infection and the babyoil helps the listerine adhere to the skin and also sooths the skin while it works. I recently did this with a foster hound and it worked great over night. It might burn a little especially the first time but it kills what ails them arm pitts well. It isnt harmful and is pocket book friendly.