Mosquito control is a serious thing in Singapore. Especially because Singapore is having a bad year for Dengue Fever - double last years' cases.

Dengue is usually just an annoying sickness: fever, headache, muscle pain, vomiting and rash. Occasionally you do die from it. I'd rather avoid it, thanks.

There are absolutely no bug screens on windows or door and no mosquito netting over beds in Singapore. This really surprised me when we moved here and were looking for a place to rent. I knew Dengue and sometimes even Zika was a potential problem here and assumed this would be managed in the house with bug screen to keep the mosquitoes out like we do in Canada. Instead Singapore is very strict about mosquito prevention and normally there's not much of a problem.

Before COVID, the only time we got a mosquito bite was if we were in Labrador Park. We apply bug spray anytime we are going in a nature park or on Sentosa Island, but it's only the natural very green spaces where we have gotten any bites. Other than that we haven't needed any bug spray. We see some kids with their bug spray stickers or being sprayed down, but we haven't gotten bit at the playground even in the early evening. I haven't gotten a bit on a patio eating dinner anywhere at home or at a restaurant or wandering around downtown.

I still see the gardeners in their bug spray suits doing a through spray every Monday at our complex, but we are starting to see mosquitoes even at home now. I imagine the largest reason is that there's more standing water. Mosquitoes can reproduce in just a quarter's worth of water in a very short period of time. All water features have been shutdown during the Circuit Breaker, I imagine, because there is no one to service them.

A fountain right after it rained. 

On our property we have a lot of fountains. They were obviously never intended to be shut off for long periods of time. Many of them don't drain completely. The water was removed when they were turned off, however, rain water collects in them and doesn't fully evaporate. I sent the management a email highlighting the water collecting and next time I noticed they had added bags of mosquito repellent to the fountains, and tried to cover the fountains up in some places.

The drain isn't set in the lowest point so rain water is collecting in the blue hollow. 
A similar example.

Hope they added chlorine, because this one's open to the rain where most of these ones have been drained.

The condo pools aren't part of the problem, because of all the chemicals in them. Some of them have moving water, because of infinity pool waterfall features too. However, many people have added kids wading pools to their patios - man, do I wish I could have one. But one wonders how often they're being emptied.

I imagine this larger fountain is chlorinated as it wasn't drained, and the small round is technically a pool.

The government also obviously noticed the problem, because they issued an official notice on their COVID-19 updates website. Pointing out that mosquito control is an essential service and that ignoring prevention will get you fined just like before the Circuit Breaker. They specifically called out construction sites (which are all closed currently) as potentially high breeding grounds and indicated that crews should be being sent into construction sites to do the usual mosquito prevention activities.

It's also the rainy season right now. It rains most nights. There are less people maintaining properties and that also means less people removing collected water.  With so much time spent at home people, we've noticed that people also been improving their balconies; More potted plants and patio furniture increasing the chances of collected water.

We have found a few mosquitoes in the house for the first time in almost a year. Our Helper found a few in her space and she used the insecticide spray on her room. You spray it, close up the space and leave it for a while, then air it out before you go back in.

It would be difficult to spray the rest of our house seeing as we have no where to go and you can't stay when you spray. We've only seen a few mosquito and just killed them. We're hoping they've just popped in from outside and didn't set up house. It seems to have been on rainy days mostly.

If anyone gets bit overnight, we'll have to spray, because it would indicate the mosquitoes are living here. It's important to do the dark spaces: under beds, behind shelving, in closets. Fingers crossed that the water features (and pools) and property maintenance opens up before mosquitoes get too bad.

Irony would be getting Dengue Fever instead of COVID-19