I live on 20 acres of wooded mountainside in Northern Idaho. My wife operates the non-profit “Mystic Farm Wildlife Rescue” (she accepts donations on her website) and we have lots of young deer and elk in pens on our property plus a pygmy goat, chickens, 3 cats, and two mini horses.
We had coyote problems when we first moved here. My wife found a solar-powered flashing red LED device called a “Nite Guard” online. It is 2.2 x 2.5 x 1.2 inches and weighs 3.2 oz. We hung these around our property and on the four sides of the critter pens and we have not had any ‘yotes in close since then. They are available from Amazon and lots of other places.
The theory is that the flashing red LED fools the predators into thinking there is another “red-eyed” predator who is watching them and they leave the area. I was skeptical at first but we have used them for two seasons and no predator problems since then.
My personal choice is to blast them with a .223 with night vision but this is a LOT easier and cheaper. Less noisy too.
You got predator problems? Check this out.
Hmmm, I wonder if that would work with mountain lions?