Catnip. I’ve not paid much attention to it. We grew it in the container garden. The cats mostly ignored it. I guess that once you dry it, it becomes potent, kind of like potatoes are nothing till it’s vodka. Gather around, gnaw, paw, and claw. Eat catnip and be merry. It drew them like a moth to a candle. Five anyway, the other two were aloof for reasons unknown. Eventually, everyone did have a go. Cat stupor.