This set of two ultrasonic deer deterrents attach to the front of your car and produces a high-pitched sound that only animals can hear - startling animals and preventing them from running in front of your vehicle.Safe and humane, this animal repeller protects both you and wild animals, helping reduce the risk of collision. Requiring no batteries or wiring, this self-powered repelling device is air powered; the inaudible high frequency sound is generated by air travelling through the air holes at speeds of 35 miles per hour or more.Even in the UK, around 450 people a year are killed or injured after collision with deer (not to mention the fate of these beautiful creatures). This ingenious little device is easy to mount on any vehicle and should reduce the risk of accident. Suitable for cars, vans, lorries and motorbikes, they're easy to mount using the double-sided adhesive patches supplied. Fit them to any part of the front of your vehicle - on the front bumper, radiator grille, or other area of trim. Also an effective repellent on other animals including badgers, foxes, cats and dogs. Set of two. Measures H3.8cm x W4.8cm x D1.8cm.