Glade Automatic Spray is a battery-operated unit that time-releases fragrance automatically, while a boost button provides more control with an instant burst of fragrance and when it comes to certain rooms in our home, that's called peace of mind. When your home can use a burst of freshness, the Glade Automatic Spray Air Freshener Refill (various scents) can lighten the air and take away existing odors. The sprays are operated by battery and offer time-released fragrance to keep your home fresh at all times. Glade spray also offers a boost button, so you can instantly have a dash of fragrance in whatever room it is needed.