[8-Piece Car Deer Repellent Device] This 8 piece car deer repellent device set is suitable for mounting in the location with the best air circulation in your vehicle, helping you to use the sound made by air flow to remind deer, elk, moose, antelope and kangaroo to stay away from your vehicle. Enough quantity to meet your daily use needs, easy to replace. [High Quality ABS] This car deer repellent device is made of high quality ABS plastic, which is able to withstand extreme outdoor temperatures, even in extreme hot or cold weather. The self-adhesive tape will not damage your car's paint and can be completely removed with alcohol. [Keep Deer Away From Your Car] The air passing through the deer warning whistle produces a sound that effectively alerts deer, elk, moose, antelope, and kangaroos approaching your vehicle to stay away from your car and avoid a collision. Note: It is recommended to install 2 deer warning whistles per vehicle. [Easy to Hide] This save deer whistle has a dual construction and mounting base, the whistle is easy to hide, suitable for all cars, SUV, trucks, motorbikes or ATV, etc. It has a quarter mile range and is only effective when the vehicle is travelling at least 35 miles per hour. [Easy to Install] You just need to remove the adhesive backing and stick the whistle to the space you want to install it, such as grille, front bumper or rear view mirror.