This is an easy fix. Only buy the baking kind. I used baking soda (baking kind) in the frig and freezer long before they sold a special box for that use. So buy the baking only and use it for baking and the fridge. I open the spout area of the box carefully, leaving the flap, then in a month, I hold the flap shake the box and put it back in the frig. Then I use it in the wash.