Get up to 60 days of commercial odor control without the spraying, misting, or liquids! The Dual fragrance diffusion solution utilizes two fragrances and is ideal for medium-large spaces, up to 600 sq. ft. The dual scent cartridge design can be set to alternate scents or blend two scents at once, allowing you to create your own signature scent! The fragrance cartridges are made using a proprietary polymer blend infused with essential oils that attacks and neutralizes odors with Odoraxe™, a scientifically designed and tested technology that continues to counteract malodors even when you can no longer smell the fragrance. Effective against Tobacco Smoke, Bathroom Smells, Body Malodor, Pet Odors, Mildew Smells, Kitchen Smells, and Cooking Odors. Environmentally friendly: VOC-compliant: no aerosols, harmful solvents, or propellants Uses pure essential and fragrance oils Recyclable refill cartridges Non-flammable Available fragrance-free and in a variety of classic and luxury fragrances.