Rats are a public hazard, and everyone knows that rats cross the street and scream.
if we explain it from the perspective of feudal tradition, there is nothing wrong with it.
Rats belong to thieves and like to steal oil (stealing oil here is a general language, not absolutely stealing oil and not stealing other foods). Everything in your house has been stolen. How can you say that it is better to have rats? No matter who steals something, it's a waste of money. Needless to say!
I hope I can help you.