What is the hardware store version of 20 gauge pet fence wire?

Question:We are moving to a new house, so I have to set up our Innotek pet fence again. Instead of buying some fancy brand wire, I was just hoping to pick up a spool at Home Depot/Lowes. So I was wondering what I should look for at the hardware store .. just plain old 18 or 20 gauge copper wire?

Here's the "official" version of the wire

http://www.americas-pet-store.com/detail...

Here is the fence we have

http://www.americas-pet-store.com/detail...

(I know there are people out there that say these fences are really cruel, but it would be far worse if my dogs dug under/went over the fence into traffic and we will be on a busy road.)

Answers:
The wire that is used with your pet fence is especially designed to carry a low voltage. Do not buy anything but the manufacturer's replacement wire. You could injure your dog if the wire you purchased did not carry the load evenly and he hit a hot spot in the wire. Is it really worth risking your dog's health to save a few bucks?