If they don't work that means he hit a deer?? The impact will probably remove the aforementioned whistles for you.I think you will find that most of the answers (google) to that question will be "no", but there are those that do feel they work. Insurance companies won't give any discounts for having them.
They are small and sometimes look pretty cool, so buy a couple and see. If they don't work... remove them.
That one actually made me laugh out loud. Then I started to think about it and realized how very true that would be. One theory is that fear is instinctual, and changes through evolution. This is why animals aren't afraid of cars and bright lights, but are afraid of larger animals walking through the woods. That is why humans are afraid of sharks and not afraid of riding motorcycles. Our instincts don't do the math to realize that many more people are killed on bikes than by sharks. Evolution hasn't caught up with our technology enough for us (or animals) to fear it.I read that the whistles that make the sound of a Brontosaurus crashing through the woods frighten most deer away, except for the really dumb ones.
I just had the opposite happen to me in the car the other morning.Deer are just not wired to understand that a man-made object moving at speed is a threat to them. If they want to cross the road - well, they're darn well going to do it. Whether it's the male leading them across the road or the does and bambis that follow, trusting their leader. :yesnod: