Andyd wrote:
#&$^* things. Sounded like a very good idea, but before forking out
$90 for one I thought I'd ask if anyone has tried it out.

Friends of ours have successfully used one to protect their japanese maple
from deer. We have one that we use to keep our pond safe from herons.

--
Victor M. Martinez

http://www.che.utexas.edu/~martiv