I planted Chocolate Mint in a raised bed back in the day. BIG Rookie Mistake!
Before I sold that house, I nuked it. ;)
I had mint as well that spread, but I could use that in my tea .... not so the catnip! LOL! My cats would actually swack out on the stuff .... as soon as they saw me coming in the door with it, they were meowing. Anyway, the mint was easier to get rid of than the catnip, which was horrible.