Hi 3Huts
Personally, I do not think it is safe to use ultrasound deterrants with hogs around. Once, a while back, I tried a rat scarer, with the intention of moving it before it got to the time the hogs arrived. One evening a hog caught me out and arrived early whilst it was still there. I happened to look out of the window and saw the hog passing the rat deterrant and it visibly flinching when it went past.
So I wouldn’t want to risk using any electronic animal deterrant.
You don’t say how the cat is deterring the hogs normal activity. Normally hogs aren’t bothered by cats, so it may be that they will become used to it. Or is the cat eating the hog food – in which case it is possible to have hog boxes which they can be kept out of. But maybe it is doing something else?
