<p>Ours works pretty well for our Brittany Spaniels, including the one who was a rescue. The older dog is extremely pain-shy, so no problem at all there. The rescue dog will run through when the batteries are extremely low and I haven’t done my duty and walked him enough miles.</p>
<p>When we had the system installed, one of their employees did the training, and claimed they have never found a dog they couldn’t train to the system by adjusting the warning distance and the ‘shock’ level. Well, of course they would say that…</p>
<p>Good luck.</p>