My new deer whistles must be working.
The license plate was crumpled before I installed them. They are the two black things mounted on the bumper. One is “open” and the other is closed but I can’t hear anything. Perhaps the deer can because none have jumped out at me on the road since I installed them.
The one big problem is they make me drive faster. I am (perhaps falsely) confident I won’t see any deer and that by driving faster, the wind will flow through the whistles at a higher velocity and make them louder.
Oh yes. And apparently moose can’t hear them!
Island and North Country Life 
Wow. I wonder if it works for kangaroos?
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Then you wouldn’t need those massive bumpers.
Sent from my iPhone
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True, but they still make a mess!
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Jen, I just reread your explanation of cricket to foreigners and laughed out loud. It also was a great synopsis.
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I’ve had them on my car for wallabies (they’re sold in Aus as “RooShoos” or some similar word play 😉
I, too, felt like they worked! But maybe it was the time of year when the wallas weren’t that active anyway 😉
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Well at least your vehicles have backup protection!
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