I have an Electronic deer system and have not had a Deer or Dog break the beam yet.

Deer whistles
 

Anyone use these when riding? Wondering if they work. Thanks gents.

de ja vue
 

see pg 2 under deer. If they worked i would use them for hunting

If you do an internet search for "deer whistle effectiveness" you'll find that all the manufacturers claim they work, but when scientists study how effective they are, the results don't support the claims.

Try this site.
http://www.ehow.com/about_5090740_ef...-whistles.html

It summarizes some of the research.

I've never hit a deer in 35 years of driving/riding, and I've never driven any vehicle with a deer whistle on it.

Just buy a hunting license with a deer tag, you won't see many deer the year you do...

Man, I swear by them deer whistles!:icon_boat:
Got a set of them on my boat and haven't hit a deer yet!
They must work! (eyeroll)

Only in your mind........................

They work great if you're going about 18mph and they hear your pipes. You'll love how they scatter like crazy to get out of your way.

Two deer whistle posts so close together? Isn't there anything else to ask about?