Ok, so I have a couple of ducks, plan on 1 or 2 more, and am getting 3 hens. I have no foxes, but tons of rats, possum and raccoons. I am looking at all sorts of repellents. I bought a humane trap but the trap proved to not work very well. So I looked into that mint spray, and saw the sonic repellant units. This is what has got me thinking. I have a dog, I have a cat, and have 2 ducks thus far. So, I know and see that some units let you pick the level of pitch for different rodents, but, I would think the fox/raccoon setting would drive my dog or cat or both nuts. And I would have to buy 2 of them with a setting for raccoons and possums and another for rats. I don't see how my dog. Cat, and maybe birds wouldn't be affected by them. Does anyone have Experience with sonic repellents or any repellents that work? My coop/coops and run/pen are totally predator proof, but, my garden still gets eaten up, and I don't want the raccoons to spook my babies trying to constantly get in, plus, the rats are going to be a problem with eggs I'm sure. ??? Any help is Greatly Appreciated.