re: Deer dogs on my property....

I get why people kill them. It must suck to drive several hours to your expensive property only to have the dogs ruin your hunt. I personally couldn't do it, but seriously, I get it. Now, OP, what I would do is trap them and give them to a shelter or tell them that you have an interest in trapping coyotes as others have mentioned. They wont dare to put their dogs back on your place if it means an expensive trip to the vet.