How long do Air Wick Crystal’Air units last?

Air Wick Crystal’Air lasts up to 4 weeks.

Is Crystal'Air just like an ordinary gel air freshener?

No. A common problem with some ordinary gels is that, while they initially smell strong, the fragrance fades. Crystal'Air, however, provides up to 4 weeks of consistent and effective fragrancing because it is made using advanced 'Hyperscent' technology.

How do I know when to replace my Crystal'Air?

Crystal'Air is so effective because it draws its scent from the gel. As it does so, the gel should shrink and separate. This is quite normal and is a sign that you should replace your Crystal'Air.