JD> Larry, have you had any experience with underground
 JD> electrical fences for controlling animals?  I am especially
 JD> interested in if I can set one up around my yard for my
 JD> cats, and a larger one around my property for my dogs.
Let me butt in here, Joe.  I had one of those "invisible fences" (in fact I
still do, in the garage) at my old house in the country.  It worked great on
my Rott until the wire broke.  As for having 2 perimeters I don't see how
that'd work as I assume that they all work on about the same frequencies.
Unless you don't want your dog up around your house this'd work but you might
need 2 units so you could vary the power levels especially if you have a
large dog and a small cat.  I know what the high-power setting did for my
Rott and I'd say it'd probably cook a cat or small dog.  :-)  Not really, but
the jolt would be pretty severe for a small animal.  Since this if way
off-topic, e-mail me (if you can) at one of the addresses below and I'll pass
along some more info.
        Lyle    --INTERNET:  lyle.knox@iotp.com OR lyle.knox@technoid.com
                --FIDO: 1:114/237  RIME: INNPARK/1037
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