We use only the finest natural Catnip from North America for Geo Gee toys. These toys feature a special lock, allowing fresh Catnip tea bags to be added repeatedly - to last throughout your cat's nine lives. Catnip is a natural, non-addictive herb that encourages playful behavior in about 70% of cats, which have a genetic trait that makes them responsive to Catnip. The sealed bags ensure maximum freshness and keep your extra Catnip in the necessary conditions until needed.