[YEA] For jock itch, use 91 Percent Rubbing Alcohol (Walmart and pharmacies have it). Many people have suggested this; and I would like to agree. Alcohol kills just about everything on the planet (including Fungus). The only thing it can't kill is spores from some bacteria.
However, I suggest following-up with the 5% Hydrogen Peroxide solution as well.
You can't buy 5%. You have to make it from 35%, so follow my procedure for that, being careful you don't get chemical burns while making it (2 half-teaspoons of 35% to 15 half-teaspoons distilled water).
Swab it on, liberally, wherever you have problems and let it stay there until it dries. After waiting a few minutes, swab on liberally the 5% Hydrogen Peroxide.
Do this at least 3-4 times-per-day.
Any deep areas that have the infection will become open sores for a time and dead skin will peel off. This is expected. After all the infection has been killed-off, it will become nice pink skin.
Keep doing this for at least a week. Then, you need to populate with acidophilus and natural bacteria again. Purchase Multidophilus from a Health Food store. Add it to coconut oil and apply.
After doing this a few days, purchase unfiltered Apple Cider Vineger with Mother. You know it has 'Mother' because there will be a cloud of stuff at the bottom that is floating around. If it is perfectly clear through the bottle, keep looking. I found some at Frys; but can get at Amazon or a health food store.
"Raw, Unfiltered, UnpasteurizedMade from juices of ORGANIC certified grown applesDynamic Health Apple Cider Vinegar contains "Mother" of vinegar that is formed naturally in unpasteurized vinegar by the acetobacter"
Acetobacter is the key. It is a beneficial bacteria. For the next week, swab on the raw ACV and dry with a very hot hair drier. This will make the skin pH be proper and will resupply the beneficial bacteria.
If you ever have the problem again, follow this regimen. Works anywhere you have fungus.