Might be time for an oral anti-fugal pill. Keep shoes off and feet in the sun as much as you can. Dry your feet off with a hair dryer, using a towel can spread the infection to other areas. If using a towel use it once then wash it.
I only had one really bad case that couldn’t be killed by anything. Tried over the counter stuff. Got some topical cream from the doctor. Tried peeing and other folk cures. The only thing that worked came from a random comment on the internet, so no more authority than I, but nothing else was working, so…
Zinc based diaper cream from the baby isle of any grocery or drug store. Messy, smells like baby, but it works.
Wear 100% wool socks ALL the time. Thick ones if it’s cold in the winter and thin ones in the summer. The wool will pull the moisture, which the fungus needs to live, away from your skin.
White vinegar works too. Buy the huge bottle for $1.99 at the grocery. Put a cup of vinegar in 2 cups hot water and soak feet for 20 minutes or so. My heel lesions went away in 2 weeks doing this, and now I do it every couple of weeks to make sure nothing returns. Plus, it just feels good to have a nice warm foot soak before bed, even if it does smell like vinegar.
I also tried rubbing coconut oil on my feet and then covering with socks to wear to bed. Since I did this immediately after the vinegar soaks, I can’t say if it helped, but the skin on my feet got very soft! Coconut oil is supposed to be a natural anti-fungal, anti-bacterial supplement.
Wear 100% wool socks ALL the time. Thick ones if it’s cold in the winter and thin ones in the summer. The wool will pull the moisture, which the fungus needs to live, away from your skin.
And changing your socks a couple times a day. That’s why most homeless people have athletes foot, they never change their socks.