As the title states, this nifty device not only handles mosquitos indoors and outdoors but it also got a few flies for me too! That was an unexpected bonus I wasnt expecting.
It's very easy to install, you just plug it in like a regular light. Pulling the switch change the mode - light on with zapper on, zapper on but light off, and off. I was happy to find I can use the zapper without the light. That would be pretty annoying.
This also comes with a little brush and instructions. The light bulb fits the standard sized sockets used for most lamps and ceiling lights.