Grandpa Brock's deer deterrent

Grandpa Brock built a deer deterrent that works on exactly the same principle as ours --- many thanks to his grandson for pointing me in the direction of the embedded youtube video.  If you watch through to the end, you'll notice that Grandpa Brock adds a pebble to the can to mix up the sound a bit.  We're coming to realize that minor adjustments like this are enough to keep the deer on their toes and out of the garden.