My girl Penny has never been a digger. Our backyard is fenced in and the dogs have access through a doggy door. We just put in a new fence and Penny dug out yesterday and today. Luckily there are a lot of dog people in the neighborhood, so both times somebody took care of her. She is extremely smart and I'm sure now that she's figured out how to escape she's going keep digging out. I'm sure others have had this problem and was wondering what you did to curb this behavior. Also curious if maybe there was some kind of spike type product that we might be able to drive into the ground around the fence itself to deter her from digging. Any and all suggestions appreciated.