I tried white vinegar and 91% alcohol. It worked. The itching stopped within a few hours. What a relief. I was going crazy. I had the problem for 7 month. Thanks, EarthClinic.
Apple Cider Vinegar, Rubbing Alcohol
For jock itch: I have used ACV and tea tree oil.
I have found that a combination of Apple Cider Vinegar and 91% alcohol knocks it out quickly. Spay it on after your shower and let it dry. Spay it on before going to bed. Then the same regimen the next day. By the third day it is just about gone. Continue the treatment for 2 weeks to make sure you got it all.
Spray your feet also, just in case there is some hiding in between your toes.