Deer respond to motion
One of the reasons our deer deterrent works so well is because of
the movement of the golf ball. I was reminded of this when a deer
walked quite close to me in the woods the other day. I had
stopped to rest, so the deer had a hard time deciding whether my still
form was just another stump in the forest or was something to be afraid
of. It watched and waited, stamping its hoof to try to startle me
into motion, then decided I wasn't a threat and wandered on its way.
The most effective deer
deterrents always seem to include some kind of motion. I
encourage you to keep this in mind when designing your own!