ARM & HAMMER baking soda in Fridge?

[KCM]

Its a 'tradition' at our home to keep an open box of ARM & HAMMER baking soda in the fridge, and change it every two months.

I know it is not expensive to change the box, but lately I've been wondering why change it? Couldn't one box last for years?

[tinda]

The only part affected is the top 1/2 inch or so.
I just remove that and stick the box back in the fridge.

tinda

[tyusclan]

You can also rotate them out by taking the old box from the refrigerator and using it for cleaning, and putting the new box in the fridge.