Febreze Plug-In Air Freshener Refills (3 Pack) use Fade Defy Technology to provide a consistent, fresh scent that lasts up to 50 days on low. The Linen & Sky fragrance brings a clean, outdoor freshness into your home while effectively eliminating odors in bedrooms, kitchens, and hallways. With automatic, digitally controlled scent release, it delivers continuous and long-lasting freshness.