Med benefits have been touted for scrapping your tongue with a COPPER tongue scrapper. I bought two to, probably from China. Me thinks the Chinese copper tongue scrappers contained copper, probably a one molecule thick coating of copper They orig looked copper colored but now have that "cheapest of the cheap metal look". How important is it to have copper? Does a pure copper scrapper have an odd taste on the tongue like these? What benefits have users found with real copper tongue scrappers?? These do remove tongue junk but will real copper be better? Links for the real thing? Thank you, and f u China, would it kill you to use pure copper?