I have had the invisible fence for my little yorkie for the past 4-5 years. It has been great. I can totally trust my dog when I open the door for him to go out that he will stay in our yard only and no go running after traffic or down the street. He seems accustomed to the patterned now....knows where it is permitted that he can and cannnot go and abides by it. I love my little poochie and know it is safe when I open the foor - he is aware of here he can and cannot go. I would recommend it to everyone and anyone.
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