COPPER TONGE SCRAPER. Benefits: Promotes a healthy mouth & gastrointestinal tract. Removes toxins known in Ayurveda as Ama from the mouth. Features: Made from 100% pure Copper. Sustainably-made. Copper tongue scrapers can last indefinitely if cleaned regularly and stored away from damp areas. Copper can oxidize if left wet, so make sure to dry it thoroughly after each use.. When oxidization occurs, the metal can look darker in some areas, leaning green or black. To clean, rub the scraper with a half lemon or lime to remove tarnish, add salt to the fruit for more abrasive scrubbing. Rinse and polish as usual.. :