How do I smooth damaged metal cereal spoons?

-Over the years my daughters have been careless and dropped a majority of our good metal cereal spoons down the drain and turned on the food disposal. So now they have the edges all chewed up. The spoons can be used but you have to be super careful. Otherwise you rip up your mouth. None of them have started to rust luckily. Does anyone know the best way to clean off the burrs?Emery cloth. It's designed for use on metal and comes in different grits from fine to coarse. Available at hardware stores.
They can be filed with a rasp.