It’s amazing what you can train a cat to do. Directing their natural behaviors towards a mutually acceptable object is among the very easy things.
First, you have to realize that training a cat is not like training a dog. Dogs will respond to negative feedback (i.e., scolding, spanking, punishment). Cats do not. Repeat: Cats do not respond to negative feedback.
However, they do respond to positive feedback, and deterrence.
So, how does one use positive feedback and deterrence to keep one’s cat from clawing the $15,000 suede sofa?
1 - Provide a good scratching post. Get one that is large enough for your cat, and includes both a carpeted section and a jute or sisel rope wound section. This will be preferable to most anything else in your house. Put it in front of the place where the cat is scratching inappropriately.
2 - Make the scratch post attractive to your cat. The easiest way to do this is to put a catnip scent on it, assuming your cat responds to the herb. If not, then you can try your own scent, from dirty socks and underwear.
3 - Make the furniture unattractive. Pin or tape sheets of aluminum foil over the furniture where the cat is scratching. (These can be removed when company comes over. Don’t obsess like my wife.)
4 - Reward the cat when it uses the post. Speak to it kindly, and pet it and show it affection when it behaves appropriately.
5 - Once the cat begins using the post, you can start inching it towards the place where you want it. Move it an inch or two every day.
You’ll be amazed how well this works!