Electric mosquito repellent is a common mosquito repellent product, but there are many alternatives on the market, such as electric mosquito repellent liquid and mosquito repellent spray. Electric mosquito repellent liquid is easy to use, can last for 30 days, no need to add medicine or change medicine every day, just open and close the switch can be. However, some illegal businesses may add other harmful ingredients to the electric mosquito repellent liquid to enhance its mosquito killing effect, which may cause hidden dangers to human health. Therefore, when choosing electric mosquito repellent liquid, consumers should ensure that it meets production standards and choose regular channels to buy.