You can buy a scratch post from a supermarket or pet shop, or, if you are a little bit handy with a hammer and saw you can make your own from a few bits of wood and some old carpet. You can become very inventive here!! It's definitly worth having one though. If you can convince your cat(s) to use a scratch post you won't regret it. Some sophisticated scratch posts even come built into the form of a small cat house or climbing frame. They are considerably cheaper than a new leather sofa!