Just wanted to say you can get rid of athletes foot with ozone. That's how I got rid of mine. Just by a generator, get your feet wet with warm water, and stick the tube from the generator between your toes or fingers for a few seconds on each one. After 10 or so applications it will be gone. Plus ozone is good for so many other things too.
Forgot to mention, this foot detox thing is just like the Colloidal Silver makers it seems to me. So you could probably use silver rods I would think instead of stainless steel. The purpose for the metal is to conduct electricity? And the salt helps conducts the electricity plus detoxes and adds minerals? I would think the only reason the expensive models use stainless steel is for sanitation purposes since they treat many people and it needs to be sanitary.