Mad Cat Catnip is grown in North America and is a potent blend of dried, 100% natural catnip leaves and flowers that stimulates a harmless, playful reaction in most cats. This aromatic catnip becomes more fragrant when pinched, so you should give it a good rub before sprinkling it on your cat’s food, bed, toys, or scratcher. Simply give a pinch to a cat as instructed and watch him catch a case of the zoomies.