Still, I think in The Clone Wars it doesn't really count because it's a cartoon. Like I said, look at Tatooine in TMP and AoTC; Watto's shop, Anikan's neiborhood. They look pretty trashy because their located in the armpit of Tatooine.
But Coruscant is the capital and is meticulously cleaned to remain pristine.
Remember before the club scene, did anakin not crash and fall of Zam's speeder into a pile of old trash containers or something?