I've finally found a motor
that is sustainable and will last longer than the previous
incarnations of this type of mechanical deer deterrent.
The above video demonstrates
the range of noise signatures that can be achieved with some adjusting
of the primary stopping point.
We've only had one minor deer
incursion this year, and we're still not sure if it was due to our recent power
failure or a particularly brave and determined deer. The system is
working quite well as you can see a very healthy and un-nibbled garden
in the background of the video.
What about something like this, all the way around the garden?
http://www.youtube.com/watch?v=C_CDLBTJD4M or this?
http://www.youtube.com/watch?v=ewalHF0T0GY