Tiger Grass All Natural Catnip provides energy and enthusiastic play that mellows into a relaxed, healthy and happy state. This is from the oil in the leaves and blossoms of the plant that safely stimulate play and pleasuring in cats. To help release these aromatic oils, simply pinch the leaves between your fingers. To keep Tiger Grass Catnip fresh, reseal the package after each use and store in a cool, dark place out of your cat's reach.