3M make these little miracles. Strips of paper are specially impregnated with chemicals which absorb those chemicals in the air which would otherwise attack and oxidize the metal plating.

Your saxophone will spend most of it's life in its case where it is surrounded with a small volume of air. The strips are placed in the case with your horn (or other plated object) and they last 6 months in an enclosed case or bag.

The result is that you can keep plated items from tarnishing for a long, long time. A MUST for silver-plated saxophone owners and highly recommended for all unlacquered saxophones! That's just over 1/2 a cent per day for this protection.