This Air Wick, air freshener refill is designed for use with all Air Wick plug-in devices. Containing natural essential oils, the refill lasts for up to 100 days based on 12 hours usage/day on lowest setting. The scent fills homes with a continuous fragrance of soft, floral notes of cherry blossom with the sweet freshness of ripe raspberry, giving a bright, uplifting atmosphere in any room.