Baking soda and Zeolite products absorb some odor and only for a very short time. As soon as moisture builds up on the surface of baking soda and Zeolite (usually within a few days) it tends to crust over, rendering it useless. Humidity Control Filters actually prevent odor before it starts by controlling the bacteria-breeding moisture that causes it. By controlling the excess moisture it also keeps all of your food fresh longer, while also helping to keep food safer to eat. All of this, plus energy savings makes Humidity Control Filters the clear choice.