I had cleaned my sister's silver service with another product, only to have the tarnish return in a few days. A friend recommended MAAS Metal Polish, and demonstrated cleaning a piece of silver with it. I ordered the MAAS Metal Polish, and my order was received much sooner than I expected. I immediately cleaned my sister's silver service again. I was pleasantly surprised with the results. Not only was the silver service shinier than with the other product, but tarnish has not returned. I am now recommending MAAS Metal Polish to my friends.