2PCS Deer Whistles for Car, Automotive Deer Warning Whistle Devices with Rubber Pads, Animal Warning Devices Avoids Collision, Universal Animal Alert Accessories for Vehicles

It works

I got these for my daughters car. She lives in Montana and there are a lot of deer, moose, antelope, elk, etc that frequently cross the roads. She installed them and we assume they are working well since she cannot remember the last time one ran in front of her car.

These may be useful for some but not for me.Pros:1. Small formfactor2. Secure hold with double sided tape3. It whistlesCons:1. Audible toy whistle sound like wind blowing through slightly cracked window or your kid sitting in the back seat blowing the toy whilst they got from a kids birthday partyI was hoping this would be more ultrasonic like dog whistles that they can hear but I cannot. This is a high pitch whistles that makes me want to run away from my car too!

One of my whistles fell off my car.