A bug zapper is an electric device designed to attract and kill flying insects, particularly mosquitoes and flies. It typically uses a bright ultraviolet light to lure bugs, which are then electrocuted by a high-voltage grid. Bug zappers are commonly used in outdoor areas like patios and gardens to reduce insect populations. These devices come in various sizes and styles, including portable models and larger units for commercial use. While effective, bug zappers may also kill beneficial insects, so it's important to consider their impact on the local ecosystem when using them.