Have you tried any scratching posts with sisal rope on them? My cats, even the one who ignores cardboard scratchers, find sisal rope utterly irresistible.
Rubbing some catnip on it (as others have said) can help make it more enticing. Also when my cats scratch something they're not supposed to, what I do after scolding them is immediately bring them to their scratching post, and then I "demonstrate" what they're supposed to do by scratching on it myself (the noise compels them to try it to). Then I praise them profusely if they use the post.
Thank you guys, I appreciate your comments and ideas a lot!
I think she sorts of feels a guilty pleasure in scratching the furniture. She knows I don't like it and I don't allow her to stay in the livingroom after that, but she keeps repeating this on any occassion.
I covered the scratch-tempting spots with blankets and she would try to go under the blankets to scratch. When she saw that was not possible she meowed and rushed outside, didn't want to pay any attention to me for a while.
I didn't try the doublesided tape yet, but I put some citrus smelling perfume on the affected furniture as I saw the smell of lemon discourages her. Now the couch is safe, but she found a new place on the armchair and anyway when the smell goes away she will start again.
She has a very sturdy and tall scratch post, incidentally with sisal rope and she would only scratch it when I play with her around it, she doesn't seem to enjoy it too much, she prefers fluffier things to scratch (crazy cat, I know) and even if I scratch the post trying to encourage her, she would go straight to the armchair.
My husband made her a new scratch post using an old fluffy blanket. The first time she liked it, then she returned to her old habbits. If she would scratch one post she would without a doubt return to the armchair or the couch, in the next second, just like an addict. It really started to annoy me and a few times I yelled at her, I know that's bad for me to do, but the sound of scratching sorts of drives me mad really, I just can't stand it anymore so I sent her outside. She has thousands of scratch places outside I don't understand the fixation with the furniture. I begin to think she's doing it on purpose to **** us off (pardon my language. She gets our full attention when she is around us, it's not like we look the other way, we both try to attract her to play or pet her, but she is not interested in either most of the time, the furniture is more amusing. If we ignore her it's the same or even worse. Perhaps she expects we all participate in the scratching frenzy or something
Whatever, we are both so stressed when she is arond in the livingroom that there is no joy in having her in anyway, so I've decided I am going to cover the furniture with thick sofa and armchair covers and she can scratch as much as she likes. I bet she will not do it anymore and she'll just run outside frustrated as ****, meowing (just as she did when I covered everything with the blankets.