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 lock-out mode for Sense & Spray is 20 minutes. The lock-out mode for Sense & Spray (with 360? design) is 15, 20, or 30 minutes depending on the switch setting.;The units also comes 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.