Lasts 45 days. No Batteries. No Outlets. Doesn't mask: fights odors with up to 4x the scent intensity of the leading cone air freshener Gives any modest space like bathrooms, closets or laundry rooms a lavish scent upgrade Convenient, all-in-one odor fighter that's longer lasting with no need for messy refills Perfect for every stinky nook or cranny like bathrooms, bedrooms, and closets