I know this is an old thread, but I am going to respond anyways...

I used this product today and had no problems. It comes with a heating pad and a temp. sticker on the bottle. I had no use for the heating pad at all. Just get a sturdy rubber band and strap it to the inside of your leg with the temp. sticker facing out. It will be about 96 degrees when you go to use it. All in all a great product. I'm sure I will be purchasing it again. :rasta: