If not, the problem may be solved by purchasing or constructing a scratching post or board. Determine your cat's favorite scratching surface and scratching-post materials. Many cats are finicky not only about what they eat, but also about what and where they scratch. Some cats love to scratch wood but reject carpet, which is, ironically, the covering used for many commercially made scratching posts. Other cats prefer a tall and sturdy scratching surface that allows stretching of the entire body.
Some cats prefer the scratching posts, made out of corrugated cardboard, that lie flat on the floor.
Sisal rope and the back of old carpet fragments are also enticing. Until a cat is given a satisfactory alternative, however, a sofa, chair, or rug may become the scratching object of choice. Offer positive reinforcement for appropriate scratching and discourage scratching in areas that are off-limits. Once you determine the type of surface and structure your cat prefers, training can begin. Rubbing catnip on the post can help.