How to Use - 1. Switch on the machine 1 or 2 hours before you go to bed. Provide complete darkness into the room (Switch off the night lamp) Machine should be kept at least 2.5 feet from the floor level. Don’t keep the machine below the ceiling fan and in front of A/c air. Switch off the machine and turn the bottom tray into clock wise direction to remove the dead mosquitoes in the morning.