Hmm. Lots of response here. ;-) That's nice.

Someone mentioned that you usually contract athlete's foot in gyms and saunas? Not in my experience. I haven't been in a gym or a sauna in years, but have gotten a mild case of athlete's foot now and then on a reasonably frequent basis, so I think it's just ordinary footwear that does it. Anyway, it's easily halted by the old urine treatment.

If you don't shower (meaning you take baths instead) you can just pee in a bucket or some similar container, stick your toes in it for 30 seconds, then pour it down the drain and wash the bucket out.

Urine seems to be an excellent disinfectant, but I think it needs to be fresh for best effect. It gets pretty cruddy if it's left standing around for a day or so...

I don't think it would make a darned bit of difference if you used someone else's urine or your own...but using your own is a lot more convenient and practical, wouldn't you think? ;-)