The Glade Sense & Spray Automatic Freshener, offers a unique fragrance experience that blends attractive design with motion-sensor technology that allows the unit to spray when you pass by, In order to conserve the refill, the unit also comes with a lockout setting. The lockout mode for Sense & Spray is 20 minutes. The lockout mode for Sense & Spray (with 360? Design) is 15, 20, or 30 minutes, depending on the switch setting.; The units also come with a boost button, that can be pressed at any time for an extra burst of fragrance. Choose from a variety of quality Glade fragrances.