You can get your cat to scratch on a new post by sprinkling some catnip on it and then placing it somewhere accessible. Cats often like to scratch after they wake up, so putting it near where they sleep is a good way to get them to use it. You can also reward your cat with a treat when they use their new post to reinforce the idea that it’s a good place to scratch. And if you see them scratching at something you don’t want them to, you can spray them with water or make a loud noise to get them out of the habit.