TOPIC: Cat root. Tntrader or Anybody

Saw in a thread in the false unicorn section that Tntrader had something called cat root. Said it was good to keep cats out of places you did'nt want them. He did'nt know what it was actually called so if anybody has a pic or knows of another name for it I'd really appreciate it. Sounds perfect for my moms flower garden. Thank you.
Anita