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Do deer whistles actually work?

Hitting deer or elk is my greatest concern driving in the middle of the night.

Is there enough ram air to make them whistle?

High frequencies quickly attenuate in air.

Are they even heard far enough ahead to have an effect?

Thank you.



  • edited February 2011
  • edited February 2011
    Thanks, H2Oboy.
  • edited February 2011
    No, they're utterly useless. They're dangerous, in my opinion, because people who use them THINK they might work, and perhaps are lulled into a false sense of security.

    The only protection is vigilance, a clean windshield, bright headlights, and driving as slow as possible.

    What else helps is driving a tank.
  • edited February 2011
    In my 43 years of driving, I have never hit an elephant.
    Works so well at repelling elephants that "I ain't never even seenone, neither."

    Do these whistles even whistle?
    Seems like ram air would not do it.

    I should invent DEER LIGHTS to better reflect light from staring deer.
    (I actually mean that.)
  • edited February 2011
    unless the deer are looking directly at you you will not see their eye shine very well. forget about deer when you are in moose country.... there's one big animal.
  • edited February 2011
    While it may be impossible to completely eliminate the threat, the best way to avoid collisions is to slow down & be alert. Use high beams when there is no oncoming traffic.
  • edited February 2011
    I've never seen a moose. My moose whistles work very well!

    Have not learned of any moosencounters in Colorado.
  • edited February 2011
    I have seen the lights of critters eyes including deer to avoid a collision. I have no experience with moose, except while setting up camp in Yellowstone. A large brown body coming right towards our campsite as we were setting up. Ran to the car locked ourselves in (in retrospect a lot of good that would do) thinking it must be a bear, as a moose ended up walking through our camp site.
  • edited February 2011
    It's one of those false proofs. How do you know if it never happens. I have some electronic pest devices in my garage. I don't see the pests and and assume it works. The first time I start seeing rodents, I know it doesn't.

    They're cheap. Put a couple on your bumpers. If you hit a deer, get back to us.
  • edited February 2011
    No one can prove they do or do not work. But, in a former job as an insurance appraiser I have photographed several deer whistles attached to wrecked vehicles that were clogged with deer hair.

    The point is they might work but obviously not all the time.
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