C.B.
I watched a segment on the new about these foot pads about a month or so ago. They are NOT effective. If you pour a few drops of water on them they WILL change color and may put off a scent. The owner/maker of the product would not comment to the reporters.
My advice, THEY ARE NOT A LEGITIMATE PRODUCT. Just another scam! So sorry to disappoint you. Unfortunately, there are a lot of scams out there. Just a bunch of greedy people trying to scam off the innocent!