Frienda 20 Pieces Deer Whistles for Vehicles Avoids Collisions, Deer Whistles for Car, Horns for Vehicles Warning Devices with Waterproof Animal Alert for Car and Motorcycle (Black)

Helpful tool: air moving through the deer whistle will produce sound/ ultrasound, this kind of sound can alert deer, elk, moose, antelope and kangaroos approaching vehicles, which effectively avoid deer and vehicle collisions

Safe for you and your pet: the deer warning device is equipped with 20 whistles, 10 of them produce sound waves, the others produce ultrasound; However, people and pets (such as dogs, cats) in the car can't hear it, so there's no damage to your ears or health

Easy to Install and Remove: just remove the adhesive backing and apply the whistles to the grill, front bumper, rearview mirror, or any flat place of your vehicle; Make sure the bigger ends are facing the front, and the deer whistle is level with the horizon; The ideal place is where the air flows most, followed by grill, front bumper, they can be easily removed from the base when car washing is needed

Quality animal alert: made of quality plastic, sturdy, this animal alert whistle can resist bad weathers; It can work well even stays outside under extremely hot or freezing weather conditions

Safe accessory for driver: the deer warning device is a necessary car accessory for driver who live in a wild area; The whistle produces ultrasonic frequencies and make warning sound, thereby reducing vehicle collisions