"kathy" wrote in message
oups.com...
My concern about sonic devices is for
any resident animals in the home. We all know
their hearing is so much stronger than ours.
I've done some surfing around the web looking
at pros and cons and there's a lot of info
out there. (I Google, therefore I am...;-)
kathy :-)

True, and even if directional, I wouldn't want to subject my guys to
that. Of course, the cats would think the same of a sprinkler. I wonder if a
floodlight and recording of a barking dog would have any effect on a
raccoon? :-)