If you have been using baking soda to keep your refrigerator fresh, but aren’t happy with the results, or just have run out, wet coffee grinds will do the same job! Most of us have them daily and we toss them. Try putting them in a bowl in the fridge. They will absorb odors as well as baking soda and keep working until they are completely dried out. Then, just replace. (I would keep the bowl toward the back of the shelf so as not to bump into it and have it spill.)