There really isn't much I can do. I go outside every so often and see if they are out there. But I can't take them to a vet to check for microchips because I have a small pickup. These dogs are big and they won't fit in my truck with me and I can't keep them in the back of my truck because then they would jump out. There are so many dogs in this neighborhood that I have no idea who's dog belongs where. The last time there was a dog in my yard I asked a few neighbors if they knew whos dog it was and no one knew.