Electric zappers are devices designed to kill insects, particularly flying pests like mosquitoes and flies. They work by using an electric grid that emits a high-voltage charge. When an insect comes into contact with the grid, it receives a shock that kills it instantly. These devices are often used in homes, gardens, and outdoor areas to help control insect populations. Typically, electric zappers attract insects using a light source, such as a UV light. The light draws the insects in, making it easier for them to come into contact with the electric grid. Many people find electric zappers to be a convenient and chemical-free way to reduce annoying insect presence.