FOR A CHEAP AND EASY WAY TO CLEAN SILVER DIP A DAMP CLOTH IN ANY ASH ,IE CIGARETTE OF FIRE ,AND RUB. THE SILVER WILL COME UP LIKE NEW AND NOT DAMAGE IT.
another good way to clean silver is to line a dish with tin foil pour in hot water then put a handful of soda crystals in(making sure your wearing rubber gloves of course) just dip your silver in for a few seconds and see the difference