More crazy fun than any other catnip!” guaranteed. Our 100% natural catnip leaf is cultivated by a world-renowned grower of herbs in the high altitudes of North America. High altitudes foster larger concentrations of catnip oil resulting in extreme potency. Not all cats have the gene which responds to catnip. In fact, about 15% don’t – therefore, those cats won’t react to this or any catnip on the market. For those that do, cats will respond with a variety of actions: some will be relaxed, some will be hyper. Regardless of type of behavior, most cats absolutely love and enjoy this fun, playful treat!