I was going to ask the question here but decided first to check the internet. Information there from Earth Clinic too (I think ginagirl has posted this before). I found another site with bath and foot bath info.
http://www.ehow.com/how_7245622_bathe-borax.html

I was looking for a foot bath. I got a rash from new shoes, tried a lot of different things, right now straight SSKI , but so far no luck. Tried ozone, different creams, cream with iodine, salt bath. Have not tried borax and Colloidal Silver . My MD thought it was eczema but looking at my nails it might be a fungus. Sprayed my shoes with Lysol and later
ozonated them.