Fresh fragrance for your entire home or office. Works with any furnace or air filter! Makes your whole home smell great! Enjoy pleasing aromatic fragrance throughout your entire home, office or apartment. A special formula scents every room and helps mask pet, cooking, and smoking odors. Simply attach FilterFresh to any size air filter on central furnace/AC units, including electrostatic (unless filter is directly connected to household electrical current). If the fragrance is initially too strong, just install one half. Store the other half in a zip-lock bag for future use. Larger homes may require two FilterFresh pads for better coverage. All FilterFresh products contain an odor counteractant working with the fragrance to help eliminate odors. Try FilterFresh to scent small areas like closets, bathrooms - even vehicles. Or, hook FilterFresh to the front of an oscillating fan to scent one room at a time. Bring the heart-warming scent of Cinnamon into your home. Also available: Country Berry, Country Spice, Peach, Pine, Vanilla and Wildflower. Remember to use FilterFresh with a clean filter for days of refreshing fragrance.