We have full view glass doors. When home, we keep the inside door open and the full view door locked. There is a runner on the hard wood floor in the entry way. If the door bell rings, my two 90 pounds each dogs, run to the door and slide on the runner putting them right next to the glass. That certainly makes a believer out of whoever rang the door bell. It's bad enough to hear their big, bad barks from inside but to see them up close makes one think about entering. To me, it's an asset.