I just returned from the Oceanside pound. I got my dog back. Micro-chipping is definitely worth the $20 it cost me.
I live close to the beach, and I have a much bigger yard than most of the properties. Some stupid asshole must have tried to cut through my yard looking for a shortcut. It's happened before. I can always tell that somebody has been through there. Just none of them have ever been big enough douche bags to open my dog run. So, I stopped at home depot and bought a new keylock for the dog run.