I can see it possibly happening with one dog but once you start hitting 2, 3 dogs, they would be stupid. The noise alone would get them caught. On breezy nights I sleep with the front door open, screen door locked. A couple of the dogs lay right by the front door and a couple by the back door and a couple in between. If someone wanted to come get me and were willing to through 6 dogs to do so, they would have to be pretty determined and want something I have really bad.
Misty- Samoyed Mix, Tannor- Golden Retriever CGC
Robyn- GSD CGC, TC, Midnite-GSD CGC,TC, Brennan-Golden Retriever CGC, Batman-Husky/Greyhound , Apollo-GSD