Detox foot bath

Has anyone seen or tried that detox foot bath that uses some sort of electrical thing and salt to charge the water to draw out toxins? It says the process starts with distilled water and a pinch of salt to conduct a low current that is matched to the person's polarity. There is a place right up the street from me who does it and I just made an appointment for Monday. I originally saw it on t.v. (alternative medicine program) and was really interested it in but didn't know where to get it done. A couple months ago I saw a news story on it and they of course said it doesn't really work, that the water changes color without someone's feet being in the water, blah, blah, blah....you know how that goes. Just wondering if anyone knows more about it or if you've tried it and what your experience was like. Thanks!!

Nicole