HappyNip Catnip & Silvervine Blend is an exciting blend of catnip & silvervine. Silvervine, a wild-growing herb foraged in the mountains of Japan & China, has a strong natural effect on cats, even some that don't respond to catnip. Extensive testing led us to find the perfect blend. HappyNip was created as an ideal alternative for finicky felines who need a little extra excitement. Catnip & silvervine is more potent than catnip & as pure as can be! Most cats respond to HappyNip with a burst of energetic activity followed by a calm mellow period. Our resealable pouches and canister maintain optimal freshness for long lasting excitement and stimulation! Available in .5 Ounce & 2 Ounce Resealable Pouch, & 2 Ounce Easy Shake Resealable Canister.