Unstoppables Plug Ins fill the air with unstoppable freshness thanks to their highly concentrated perfume. The Fresh scent is inspired by the ocean spray, invigorated with zesty green citrus fruits and has creamy sweet bottom notes. Unstoppables Plug Ins feature 3 scents that alternate every 45 minutes, so you keep noticing them. They're also available in Spring scent which will add a luxurious touch of rejuvenating sun-kissed glory to your home. Unstoppables Plug Ins last up to 90 days, if used 12 hours per day at minimum setting.