This is all pretty much true.

Currently in Singapore where the local government is quite strict on standing pools of water.

Very on top of it with a reactive-proactive system.

If there's a confirmed (1? 2?) case of dengue they will send officials door-to-door in a neighborhood to inspect the house/office for any standing pools of water. I've been inspected with some regularity.

Government will also spray mosquito smoke to help control populations. Separately, Indo has trialed a releasing a bunch of genetically engineered mosquitoes[0]

[0] https://edition.cnn.com/2021/06/10/health/dengue-modified-mo...