Sold as 1/Each. Includes (1) scented oil refill for Febreze Fade Defy PLUG Air Freshener. Continuous, automatic air freshener with digitally controlled scent release. Fade Defy Technology delivers a first-day freshness that lasts 50 days (on low). Doesn't just mask, but also truly eliminates odors. Safety Data Sheet. Breathe in the classic fresh fragrance of Gain Original Scent. Fight household odors with an air freshener perfect for bedrooms, kitchens, and hallways.