Catnip Flyer 2 Pack Smarty Kat Catnip Flyers are made with lightweight mesh for batting and chasing fun. They're filled with our pure and potent catnip for extra excitement! Catnip naturally stimulates most cats, providing a burst of playful energy, usually followed by a mellow period. Smarty Kat products are designed to child safety standards to ensure they're safer for pets.