On Mon, 07 Aug 2006 08:16:38 -0700,
(paghat) wrote:

In article , wrote:

I was wondering if anyone tried those high-frequency sonic plug-in
devices to ward off plant-eating pests? I grow plants under
fluorescent lights and I'm wondering if these sonic devices would help
with mealy bugs, aphids, scale, etc? Are these devices a hoax?

This devices are completely phony. Here's my article on the topic, with
citations:

http://www.paghat.com/ultrasonic.html

-paghat the ratgirl


Thanks paghat. Thanks for a well-written article.