I have it growing in a pot, Sherry -- I haven't had any problems with other cats coming 'round that I've noticed (thankfully, as that would be terrible). When Austin escapes out the door, he run immediately to the catnip pot. Both Missy and Austin like to chew on the leaves and roll all over them but they don't actually eat much of it. When they are done, the leaves are SO FLAT!!! They are like ROLLING PINS!