Abstract: A device for illumination and insect extermination for use with a conventional electrical wall outlet features a light source and an electrocution grid both operatively connected to electrical connectors through which power is supplied. The light source and grid are arranged such that the grid does not interfere with the transmission of light in at least one direction. A housing and a perforated translucent guard positioned about the light source and grid allow a substantial portion of the light emitted to leave the device while preventing accidental human contact with the electrocution grid. A switch allows the grid to be manually disabled while removal of the guard causes automatic disabling. A photoelectric sensor prevents wasteful energy use by activating the light source only when the surrounding environment is substantially dark.