I also have a similar problem. Sky scratches my hutch to get attention or let me know he's hungry. Now both kittens have learned this naughty behavior. Sky knows that I don't like this and he'll usually run as soon as he sees me. He's been doing it so much that he's worn the paint off in some areas. I've tired spraying water but it doesn't stop him for very long so I've just learned to live with it.