Detox foot pad??
I myself think they are a scam because I hear that put something in the pad that make it turn a different color when you sweat and it will do alike if you put water on it but how come they articulate when you use them a couple times the pad will eventially not turn pale anymore because your clean?
Answer: I be wondering the same point! Something doesn't seem right give or take a few them...
here is an interesting blog review on them... the article itself is worth a look, as well as the comments below it.
http://hubpages.com/hub/foot_detox_pads
They ARE a scam. But you can still find dozens of gullible society who think they worked.