I guess I use the next best thing. At least once a week and more if it rains alot I take my irish wolfhound for a walk (& pee break) around the entire perimeter of the area that the chickens frequent. She's a known coyote killer.
but every morning, when i wake up and roll out of bed, i do my rounds around the coop and pee on each corner of the coop and the run.
I had coon problems nightly before i started this process, now i havnt had a sign of the critters for almost a year!