It screws into any light socket. It uses a LED light that is normally purple to attract bugs and kill them within a few minutes. Its working method, which includes attracting bug using purple light emissions and zapping them by a high voltage core has proven successful in reducing the insect population. You can charge it anywhere with its USB charging feature. Plus, the coverage area is up to 1 acre. The Bug Bulb is a rechargeable zapper and its battery can last for an extended period of time. [newline]Bug light zappers offer an effective and convenient method for controlling insects, particularly in outdoor areas and the home. They are a good option if your infestation is severe, but they must be carefully considered. For best results, place the Bug Bulb anywhere you want to use it. Yellow bug light bulbs are coated with a special coating that blocks the wavelengths which attract flying insects. In some cases, bug bulb Light Zappers can have troubleshooting problems. These zappers allow you to enjoy the outdoors without the annoying buzzing insects. Randy from Sarasota FL, praised the Bug Bulb's user-friendly design and rapid mosquito-killing effect. There are a number of products that appear to be very similar, and are likely the same on the inside.