I doubt there would even be time. Our own culture might be like ants to an alien culture with the technology to travel between the stars. If such a species ever looked to our Earth with envy, then I wouldn't hold much hope for our long term future.
Based on historical parallels where a more...
As someone already said, it is just as important to reward their good behaviour as it is to scold the bad.
In the wild, if a kitten misbehaves, the mother will scold it and then walk away and ignore the kitten. If they crave one thing it's attention, so don't give them any. Tell them off with a...