Freshens the air for 30 days. Contains 35% more fragrance than the leading air freshener. Reminds you when to change it. No more guessing, just pull off the week and month tabs to show when it needs to be replaced. Consistent odor control by using the Remind Air date tabs, you'll know when to replace it; ensuring a consistently fresher smelling area. Fits just about anywhere. Each Curve comes with a suction cup that allows for maximum versatility and helps you hide it away if needed.