Elook Deer Warning Whistle for Car Car accidents caused by animals are countless every year. Large and medium animal car accidents cause greater danger and damage, and 90% of large and medium animal car accidents are caused by deers. Even if you are cautious, you can't predict when the deer will suddenly hit the road, especially during the breeding period. Therefore, it is better to let the deer actively avoid your car. The deer warning whistle is a great invention. Its design structure is simple. The principle is to drive the animals away by ultrasonic waves generated by high-speed air flow. Its small size. The outer diameter is 0.55 inches, the height (including the bottom) is 0.6 inches, and the depth is 1.1 inches. Can be installed in car bumpers, front and other positions. It is not easy to attract attention and does not affect the appearance of the car. Our products use acrylic glue on the bottom. Acrylic glue has more advantages: 1. Acrylic glue has better firmness than other glue; 2. Acrylic glue is easy to remove; 3. Acrylic glue will not produce residue when removed, other glue will leave residue when removed. If you have been frightened by an animal that suddenly came out of the road, you can try this product. We offer different quantity options. You can choose one package or multiple packages. Several more can be installed on a car for better results.