A fun way to get the cats to exercise

This is a 2 inch ball of hard, compressed catnip. The cats went after it as soon as I unwrapped it. One went after the ball and the other took the package and hid under the couch with it. It is a very hard packed ball so it is a little noisy on hardwood but it's not any noisier than some of their other toys. But because of the denseness, they can't pick it up and have to roll it around instead. I do think that they respond to dry flaked catnip better but they do love this and I like that it's something new for them. They've been using it for a while now and it's still in one piece, a little bit flakes off occasionally but it's really well packed.