OPERATION: Please read and retain all safety use instructions. TO OPEN UNIT: Press button at top, while pulling sides of holder apart. When unit is open, always make sure the timer is set to OFF position and keep spray nozzle pointed away from face. TO INSERT CAN: Open unit. Pull out red tab to activate batteries. Remove the cap from the can and insert the can with the nozzle facing out. Turn the unit on by selecting your desired time setting in minutes, and close the unit. A spray will occur at the selected time interval. For an instant burst of Glade fragrance anytime, press the boost button on the back of the unit. REPLACING THE BATTERY: Open unit and remove the can to access the batteries. Remove old batteries and replace with two new alkaline batteries. Replace can, set timer, and close unit.