Product review (5 stars): Save some money - bake your filter
Essentially, these are good filters. They appear to have activated charcoal and maybe some zeolite media which capture the odor elements by "physisorption." The odors are loosely bound, not chemically bound, onto/into in the high surface area filter medium. After three months use our Electrolux "Change Air Filter" alert appeared. Rather than order a new filter I decided to desorb the element and reactivate it using just a little oven heat. The filter was placed on a rack with the oven heated to 200F. After baking the filter for 10 minutes the oven interior smelled like the fridge would have without the filter - cheesy and pretty stale. Following the bake, replace the filter element into the fridge. You will need to reset the Air Filter option on the control panel. Press the Air Filter icon for three seconds. Result: twelve bucks saved! ;-)