-Works better indoors than outdoors.
Some tips for you
1. The empty room, nobody around, that can help the device to attract the gnats
2. Use a wall adapter to replace the computer to run the device, the computer generates too much heat, that will reduce the attraction of the device
3. Place the lamp at 1m height place, and use the bionic bait evaporator on for 7-10days, which can improve the effect