8sanlione Deer Whistles for Car, 2 Packs Ultrasonic & Wind Deer Alert for Car Avoids Animal Collisions, Deer Warning Devices for Vehicles & Motorcycles (Silver)

Material: Deer whistle using upgraded models ABS material, more durable and waterproof, can withstand extreme outdoor temperatures and a variety of weather.
Function: This deer whistle has two in each small package. An ultrasonic animal alarm, and a car wind deer repeller, the two must be used together, they will produce ultrasonic waves that are inaudible to people and pets in the car, thus helping to prevent collisions with deer to the maximum extent possible. Gives deer advance warning that they may stop at the side of the road, thus avoiding collisions.
Easy to install: Simply remove the backing and attach the whistle to the grill, front bumper, mirrors or any flat area of the car; make sure the larger ends are facing forward and the deer whistle is level with the horizon and the whistle can be easily removed from the base for cleaning the car.
Size: 2*0.9*0.8 inches, suitable for all cars, SUVs, trucks, motorcycles, ATVs, etc. The deer whistle has a quarter mile range and only works when the vehicle is traveling at least 35 miles per hour.
Risk-free purchase: two deer warning whistles are recommended for each vehicle. If you are not satisfied with this product for any reason, we will refund your purchase price immediately within 30 days.