ARM & HAMMER Fridge Fresh Refrigerator Air Filter eliminates odors inside the refrigerator, freezer, or crisper to help keep food tasting fresh, longer. This pure and natural ARM & HAMMER Baking Soda odor eliminator uses a unique flow-through vented design that exposes 2X the Baking Soda versus the regular 1 lb Box. With an easy-to-apply suction cup design, it sticks to most refrigerators, freezers, and crisper surfaces to help absorb and deodorize food odors where you need it most. To use, select a clean and smooth surface inside your refrigerator, freezer, or crisper. Firmly press the unit onto the surface and hold for 10 seconds. If your freezer wall is coated with frost, wipe away frost prior to mounting. For best results, replace your ARM & HAMMER Baking Soda Fridge Fresh Refrigerator Air Filter every 30 days. Stick it to bad fridge odors with this air filter from ARM & HAMMER, America’s #1 trusted Baking Soda brand.