Arm and Hammer is the standard of purity and America's trusted baking soda brand. This spill-proof box helps keep your food tasting fresh like it should. The removable front and back panels let air flow through the box without messy spills. For maximum freshening power; use in your refrigerator, freezer or any enclosed space where odors tend to linger like your microwave and closets. To keep everything fresh, make sure to change your Fridge-n-Freezer box every 30 days.