First Impression - lasts?

My first impression of Kuala Lumpur is that it is co clean, when we came out of the airport I hardly wanted to step on the floor since it was so clean that you almost could see your own reflection – and I am talking outside!  In KL center it is not as clean, but still a lot cleaner than Barcelona. You don´t see that many people smoking and throwing cigarette butts on the ground, and up until now I have not seen one single dog. But I saw some dog poo though so apparently there are dogs here even though I have not seen them. Or maybe that was someone else's poo...?