Keep the flies away - you can finally enjoy a conversation while dining al fresco without having to slap the flies all the time. This is a lightweight, odor-free fan that you can placeon your outdoor or picnic table to keep flies from dive-bombing your food. How it works - the dots refract/bend light, which scares insects. Bending light is not part of their DNA. In their little fly minds, the curved IPL is inherently abnormal and seems dangerous to them. They will always choose to go somewhere else. Work safely - the blade stops if something hits it, then resumes as soon as the obstacle is removed. Wide range of applications - sunbathe, play cards, sit by the pool or dine on the back deck without flies falling on you or hovering over your food.