1Working Principle: These points refract or bend the light to scare insects. In the eyes of their little flies, the curved colored light is abnormal in nature and seems dangerous to them. They always choose to go elsewhere. 2Safe to Use: If something touches the fly repellent fan, the fan leaf will stop, and then the rotating drive will resume immediately after the obstacle is removed. The fan leaf is not harmful, but only plays a role in repelling flies. 3Enjoy Conversation While Eating: The fly repellent fan can me ke you enjoy the conversation while eating, without having to swat the flies all the time. 4Light and Odorless: The fly repellent fan can be placed on the top of outdoor or picnic table to prevent flies from diving and bombing your food. 5Bottom Foot Pad: There is a foot pad at the bottom, which is easy to place the table stably without damaging the table.