Yesterday I was asked how to keep salt shakers unclogged.
For Clogged Salt Shakers:
Heat a teaspoonful of rice and mix with the salt. You could also use a pinch of ground arrowroot added to the salt. Both methods will prevent the salt for clogging the shaker. To keep the metal tops from being eaten away spread a bit of heated paraffin on the inside of the metal top. When the heated paraffin begins to cool open the holes with a pin or a wooden toothpick.