CATS,
I had a cat problem with about 10 of the neighborhood cats and one of them must have been an attack cat as he would just hump up and slash at me when I tried to run him out of the yard. Bought a .177 pellet gun and haven't had any problem since. Doesn't kill them, but sure stings and leaves a lot of squalling as they leave. Now if I see one within two yards of mine, I just clap my hands and they vanish.
Ron
