Dog Digging

[AUEquine]

Well we found the culprit of the recent yard digging.... Little Bit! I have no idea where this came from. With her new found skinniness she figured out really quick that she could squirm through the cattle panel fence. So we covered it with chicken wire. Now I come to find out she's digging a hold under the back fence.
Will a shock collar work? The only problem is that Abby chews collar's off of Little Bit. I can try spraying it with the Phooey stuff, that seems to stop her from chewing on other things. But I'll be ticked if she chews up the little charge box part. Same things goes for underground electric fence. I'm already looking to buy a shock collar for Abby, to stop her from chasing critters on the farm. So would it work if I just sit inside and watch Little Bit for a while and zap her every time she digs, and then take it off so Abby doesn't destroy it.
I swear I'm at my whits end with these two! If Abby isn't chewing, Little Bit is escaping, or the cat is clawing the walls! Could this be because of the puppies leaving? She's never tried to escape or dig before.

[WashingtonBay]

If you have the time to watch her all the time to hit her with the collar, you have the time to correct her in other ways.

I've used shock collars. I think they're really good for some things... but I think the things have to be specific and consistent. Invisible fences work because they're predictable in where the dog will get hit, and the dog can learn and avoid that. Training collars work if you give a command and they ignore it. They're not so good for just zapping them for bad behavior. It's too random and you stand a good chance of just making her a basket case. What's the bad thing? Being by the fence? making a digging motion? I don't think it's near clear enough to not just make the dog neurotic about getting hit. A low hot wire would be better. Run a wire around the perimeter.... a few inches above the ground.