DescriptionCar accidents caused by animals are countless every year. Large and medium animal car accidents cause greater danger and damage, and most 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.Features- Material: ABS. - Size: 5.00 x 4.00 x 2.00cm/1.97 x 1.57 x 0.79 inch. - This small device can drive animals away while the car is running, avoiding accidents when the animals suddenly cross the road. - The product use double-sided adhesive, more stable than other adhesive.- It can be easily pasted or removed. And there is no trace left after removal. - Can be attached to all types of bumper or grill. Not noticeable and does not affect the appearance of the car. - Made of high-quality ABS material, excellent craftsmanship. The package contains 2 pack.