Recently I was told advice was given to a person wanting to detour dogs peeing in their yard in town to put coyote urine out in the yard. They were told this would keep other dogs out.
All I have to say is please do research before giving out advice such as this. Coyotes are just another canine. Any canine wishing to protect their territory smelling coyote urine will only cause them to want to urinate there more than before. It will not keep domestic dogs away. It may succeed in drawing actual coyotes in.
So, please do research before handing out advice. Not just on this subject but any other as well.