Lomi filters use activated carbon to trap moist air, remove gases from circulation and reduce unpleasant smells Lomi filters are a proprietary dual activated-carbon filtration system. Lomi has 2 filter cages designed and placed in series to maximize the efficiency of filtration. Odor Neutralized: Garbage cans are full of old food decomposing at room temperature. You'll never smell garbage again. Reduce your Carbon Footprint: Reduce your weekly garbage by up to 80%. Each set contains carbon filters for 45 cycles.