Preventing Baking Pans from Rusting

Most of my baking dishes are made of tin, which is prone to rusting. After I pull a cake or other baked goods from my oven and put them on a cooling rack, I wash my dish well in soapy water and put it straight back into the cooling oven, upside down. The residual heat from the oven ensures that my metal dishes are absolutely dry and ready to be put away, once they have cooled down as the oven cools. This prevents them from rusting. I have cupcake pans and cake pans that are 20 years old and they have never rusted.