The guy who recommended this thing to me raises sitka deer and bears were eating both the feed and the young fawns. The way they come into his compound area is over a 8 foot electric fence just behind his feeding area! (where the fence is lowest) The electric fence doesn't seem to phase the bears but this thing does. He set the gitter up to pick up the bears presence when it is at the top of the fence, this allows the deer to feed "under the beam" and not be chased by the device. He's been at this longer than me and he's satisfied with the results.


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