My cats only liked and like the long stiff paper board

come with the dry grass powder bag. To keep clean, I did not even open the bag to put the powder on it, they still like it very much. My old cat was scratching on the velvet sofa all the time. Once I bought the paper board for her, she never scratched the sofa anymore. My little one could scratch on the board 100 times a day, when I got home, when she got up, when she passes there, when she is happy. And she likes to stay upon it!