Microchipping has not caught on real well here it seems. We had our dachshund tattooed on the inside of her hind leg. We do not have a fenced yard but she has been taught the perimeters of our yard and our neighbors are amazed that she stays in our back yard without a fence. Most of the time one of us is watching but she knows she is to stay "here". We do have one neighbor that she especially likes and he is very good about not talking to her or urging her to leave the yard. I think she would go if he called her.