Pritikin Recipes

My boyfriend had one of these foot baths at his homeopathic doctor’s office, and supposedly the bath is supposed to rid the body of toxins. I read up on the subject and I think it’s a total scam. He wants to go out and buy one of these bath machines, and I’m trying to talk him out of it. If there are any doctors or nurses or homeopathic practioners out there who could give their opinions (for or against) the validity of these machines, I would really appreciate hearing what you have to say! Thanks!
Supposedly the way it works is that ions are released into the water (by the machine) and they enter the feet through the skin, where then they circulate throughout the body. Then the ions polarity is reversed, and they are "sucked back out" through the feet into the water (the toxins), changing the color of the water from clear to all sorts of different nasty shades, like orange or black, depending on "where" in the body the toxins "came from."

My question again was about detoxification and there have been some great answers