QSUBFPYK Bug Zapper,Electronic Insect Killer,Mosquito Killer Lamp,Eliminates Most Flying Pests! Night Lamp,Killing Mosquitoes to A Quiet Sleep(Blue Night Light)

These are useless with flies flying all over ignoring it. The blue light is just that, a colored light. I ended up using a spray and got rid of the pests immediately.

Buen producto

No flys killed

Mine are all FULL of dead gnats. So happy with this result!