Magic Copper Balls For Cleaning Vases and Decanters 5 "Magic Copper "Wonder" Balls!" Jane Lucas 26 January 2019 This is my second pot of these Magic Copper balls. I've kept my own vases clean at the bottom with these balls for years. I recently inherited a number of beautiful, but very green bottomed, murky vases. A quick wash in warm soapy water & a session of swirling with this product and they are now spotless. Such a simple, but effective, solution to an annoying problem that a long handled washing up brush just doesn't manage to solve. I've recommended these balls to a number of friends who are now converted too.