You can’t stop a cat scratching. No, no way, as it is more like a basic need for him. But you can stop your cat from scratching furniture or other valuable goods, easily.
Let’s consider why cats scratch. Most of the time they do it because it’s a good exercise and it helps to sharpen their nails. It is also used to remove debris stuck on the nails. Sometimes they simply do it because it feels good and it is fun. So, why should we disturb their joy? Make a scratching post or buy one (two would be better). Put them in places they usually scratch. This will protect your valuable goods by drawing your cats’ attention away. Apply catnip on the post(s) to make them more appealing to your cat. If your cat scratches wood, make a wooden scratching post. And choose any scratching post considering your cats’ favorite choices. (Rubber etc). Applying strong smell wood polish makes your cat hate the furniture. Cats also hate the smells like lemon, coffee and garlic.
To keep your cat away from your valuable goods, put some balloons around the area he scratches pretty often.
Cats treat your house items as their own (after all, he is a part of your family, isn’t it?). so, they scratch on items to make them visually their own. It helps them to recognize them correctly. So, don’t be much unhappy about his behavior as he doesn’t know their prizes or how valuable they are.