Bullet Points: 1Safe Driving in Wild: The Deer Whistle will produce sound through the air moving to alert deer, elk, moose, antelope, and kangaroos approaching vehicles while driving, effectively avoiding deer and vehicle collisions. 2High-quality Materials: The Deer Whistle is made from high-quality ABS materials, making it reliable and odorless, available to use under bad weather. 3Easy Installation: The Deer Whistle can be pasted on the car with adhesive tapes. Just remove the adhesive backing and apply the whistle on the bump. We recommend you install 2 whistles on your car. 4Double Construction: The Deer Whistle has a practical design of double construction. It is lightweight and invisible on your car. You can apply the whistle to cars, trucks, SUVs, motorcycles, and other vehicles. It will automatically emit sound at a speed of over 35 MPH and warn the animals 1/4 mile away. 5Satisfaction Guaranteed: If you have any problems with the Deer Whistle,