Does any one use dogs to help with fox/coyote problems? Fox problems, and coyote problems can often be controlled by using domestic dogs. Coyotes especially don't cross onto the territory of a domestic dog. Not a perfect system depending on the coyote but liberal use of walking a pet dog along the perimeter can be helpful. Pee, pee, pee along a fenceline.
Or you can borrow my son, who with bat in hand chased a coyote with a favorite chicken in mouth. (Coyote clearly was not going to stop and argue as he already had his prize. I did need to council my son on adult duties v children duties.) Or my DH who chased a fox who had scooted under the barrier fence only to exit at high speed up and over the 5 ft fence. Wish I had been there for that one. Fox has not been back.
I have an assortment of dogs. As of this morning #10 (another stray) made her appearance. People seem to love to dump dogs around our farm and they eventually find their way here and I have to medicate; spay/neuter; and train them not to kill any of the free roaming animals that share this farm. Except for my breeder birds which I rotate in/out of breeder pens, all other animals including ducks, geese, chickens, goats, peacocks - all roam free. Most of the birds sleep on the ground, in bushes, in trees, on fences and never go in the coops. Many also sleep in the dog beds, under the carports or on the porches with the dogs. I've found that I can train just about any dog to not only leave them alone but to help protect them. My best predator-patrol dogs are my own personal dogs - the two Great Pyrenees and the two German Shepherds - each serving different functions. My GPs are great for sleeping with the herd of horses and roaming the property at night and they can be heard nearly in the next county chasing something off if they picked up its scent. My GSDs won't leave the perimeter of the farm but will also take off barking at anything they scent/hear. One GSD watches the skies constantly and barks and chases off hawks (or even buzzards) which is great for all the free roaming baby chicks that hens hatch in the barn. The other GSD works the coop - when birds start returning to the coop at night she breaks up any roo fights and if she hears a hen scream she goes running and will pull the roos off a hen and sit with the hen between her legs. She follows baby chicks around and watches after them. The strays while not overly loving toward the farm animals don't bother them at all and help in that they also will take off and/or bark if they pick up on something. So basically all the dogs know this is their home and everything on it is "family" and they all do their part to keep everyone safe. We also have three cats and they don't bother anything either, not even baby chicks. One cat used to love to sleep in the nest boxes. I was just walking #10 this morning and introducing her to everything on the farm and letting her know the ground rules right away - "Get along or get along"