1. Sprinkle a generous amount of salt onto your ironing board
2. Turn your iron to the highest setting, ensuring that the steam option is set to OFF
3. When heated, iron over the salt--what happens is that the dirt sticks to the salt, leaving nothing but a wonderfully, shiny iron!
It is good to do this every so often to prevent debris or dirt from your iron melting or sticking to your articles of clothing!