HI, I read some where that some cat nip is better then others because the good catnip will use the flower, where as the bad will use the stems and so forth. If that is the case, where can I get some good catnip? I don't like getting it offline, so if you know of any pet stores that sell it that would be great. I got some from petsmart, and my cats don't really care for it. But this site said that might happen when you use the stem. Does any one know anything about this.