I don't see any basis for this complaint.
None.
And given the cultural and practical necessity of living in these places, it is highly judgmental to call any of it "disgusting" As to rats, they could try importing schnauzers, who were originally bred 900 years or so ago in what is now Germany and Austria to kill the rats that spread the Black Plague; that pandemic killed half of the population of what is now western and central Europe.
I could be sarcastic, but I'll resist the temptation.