A little pot

But they’re still selling them.

People will but anything - perhaps I'm in the wrong business

Same. I’ve a bottle of snake oil if you’re interested. It will keep pythons out of your Arctic research facility. Only three easy payments of $19.95 and one complicated payment of $6.12. It’s also guaranteed to keep gators out of your Adirondack lakes and Moosen off of your tropical island. If you act now I’ll throw in the mastsdon repellent for free.