@Tima87,
Tima,
You can't tell a cat anything and force will never work. A cat will do what a cat wants to do, and you need to accept that. If a cat is doing something you don't want it to do like scratching furniture, you could try giving it something else to do. (Many fine suggestions on your thread.) You could cover the furniture to protect it, you could close off parts of your home when you're not there. I think you have to choose between cats and stuff. Of course you have possessions you don't want ruined...cat proof things...same as you would child-proof your home when you have a baby. Constant "NO" is not an option. Punishing is unacceptable. Think ahead, plan and decide: Do I care more about my things or my cats.? Things will get broken, accidents will happen, cats will pee, or crap or puke at inopportune times in inconvenient places, on hard to clean surfaces. If this reality is hard for you, too hard, consider giving your cats to a no kill shelter, which could find them a new home. A pet is long term. Cats can live fifteen years or more. Think about it.
