How it works: Birds don't like bright, moving objects. The bird repellent laser reflectors can easily rotate and reflect sunlight to create flashing and dazzling effects to keep birds away. The bird repellents use wind and light to reflect the glare. The spiral design can pass through and reflect light from multiple angles, making birds scared and frightened when approaching. High-quality material: Made of safe, non-toxic plastic, not easy to fade, high brightness, durable, and harmless to the environment and animals. High efficiency: The reflective spinners can drive away sunlight by reflecting it and stimulating the bird's eyes to drive it away. In addition, the bird repellent sheet is reflective on both sides, and it will also make a slight noise when the wind blows, which can also scare birds away. It keeps pigeons, crows, herons, eagles, and ducks away from your property or field. EASY INSTALLATION: No assembly required, each bird repellent reflector has a nylon strap for easy hanging or placement. Not only can it drive birds, but it can also be used for decoration. The bird repellent spiral reflector rotates with the wind and reflects sunlight, which is very beautiful. Wide range of applications: You can keep birds away from your house, yard, fence, roof, orchard, courtyard, lawn, deck, boat, crops, etc. to protect your home. Note: The data are all manually measured, please allow an error of 1-3 cm. Due to differences in light and display, there may be some color differences, please refer to the actual item received.