Like many other metropolitan cities around the world, you will also see street washers and street washing trucks on Hong Kong streets, which come around either early in the morning or very late in the evening.
This is a blessing for many of these streets, because being selfish is one of the worst traits for citizens of Hong Kong. Unfortunately, there are either not enough of them or not enough funding to cover all the streets that need washing.
City hygiene is a community efforts, we all have a role to play and cannot simply rely on a handful of individuals to clean up after you. So, I scream loudly to anyone who reads my posts and lives in Hong Kong, please do your part and help keep our crowded streets clean.