4 PCS Deer Whistles Wildlife Warning for Cars, Vehicles, Motorcycles, Black Ultrasonic Deer Warning

Whistles are a deterent to deer collision

Haven’t got round to fitting theses yet, but have bought them before and seem to work

I haven't seen any deer since installing these, except one, which was running away.Who's to say how effective they are but at this price, better safer than sorry.No deer were harmed in the writing of this review.

don’t bother

Cheap but good value product that was delivered quickly,use them on the car to deter deer,so far so good.

Not sure what more I can say. They appear to work. 🤞

Hopefully these work?I guess the only way I'd know is if I never have another deer run out in front of my car.One of the does emit an audible whistle which humans can clearly hear although it probably depends where you install them on your car.As I have four I first put two down low on the grill at the front of my car and never heard them.But then decided I might as well use the other pair so I attached them to either side of my door mirrors and it's one of these that is audible at higher speeds but it's not really a problem.

Could barely get it to stick and tbh not sure if it works or not.