<p>We have a “wired” invisible fence and it generally works well for our VERY intelligent border collie/aussie mix. I have found that my dog actually responds more readily to the audible warning signal preceding the “shock”. I discovered this because we also have a corrective collar (which we no longer need to use, actually) for when she is in the house and starts barking at passers-by. A “shock” correction would just send her into a frenzy, while the audible tone would stop her in her tracks and send her to my side.</p>
<p>So, is there any adjustment in your system for the range in which the warning tone is emitted? Or the volume of the tone??</p>
<p>Good luck to you with this! I hope it works out. And bless you for rescuing this dog!</p>