From the Field Cat Nip Leaf & Flower - 2oz Tub

A very potent mixture of the leaves and flowers of the catnip plant, with a small amount of stems. Look for the little flowers (bell shaped) in the mix! Each Pistil (Bell) is the catnip plant natural envelope where most of the essential oil is stored! The secret for cat toys is that if they are filled with leaf and flower, each bells stay intact, until a cat decides to bite the toy! At that point, the bell is crushed, and release a full blast of essential oil. That is why a cat will come back and back again to an old toy, because not all bells have been opened! In short, the more bells in the mix, the more potent and long lasting the catnip!