If you have a good vet they can do wonders. Our vet uses some "home remedies" as well. This is a learned behavior and natural to the cat so when we had one that did this, I asked my vet. He had an idea which I thought was wacky as hell.

I had a cat with a serious biting issue and my vet suggested a 1/2 teaspoon of gasoline fer chrissake!!! I admit that I thought the guy was nuts, but it did work, sorta. It ain't too easy to get a half teaspoon of gasoline down a cat's throat, but when I did, he liked to tore me to shreds getting away. He blasted around the room about 3 or 4 times, ran up the hallway, up the stairs, back down both, and into the den, leaped on the drapes and ran to the end of the curtain rod. From there he leaped down and ran right to me and instead of biting, licked me for 3 or 4 minutes. Suddenly he stopped and fell on his side on the floor, lying very, very still......... I thought I'd killed the poor thing, but it turns out he'd just run out of gas.

Spaw