My mother-in-law just got her ionic cleanse foot bath in late last week, and Allen and I went over there this evening to see what all the fuss is about. Don't ask me about the science because I really don't know. Basically it uses polarization (and electricity and ions) to draw toxins out through your feet. Think of it as a super charged detox mudpack. Except without the mud. It's really neat though. The water you put your feet in turns all sorts of nasty colors, and you get this horrid scummy foam over the top. Glad that's not inside me anymore.
This sort of thing is useful because it provides your body with a way to detox without overloading your colon and/or kidneys -which is awesome because if you're really toxic it's so easy to overload your elimination channels. Looks like I'm going to be adding that into my weekly routine now.