There are mosquitoes in Singapore, and there are many of them, but it is true that they are rarely bitten by mosquitoes in Singapore. The main reason is that the control work is done well, so they are rarely bitten by mosquitoes outside of pools and lawns. Old man @ Trader_S18 and I used to take a walk by the pool in the middle of the night and get bitten almost every time, but it's true that even with the windows open (during the day), mosquitoes are hardly visible in the house and we don't get bitten by them. But that doesn't mean it doesn't exist. I also specifically checked why this is the case. There is a project called Project Wolbachia in Singapore, which artificially cultivates male Aedes mosquitoes carrying Wolbachia and continuously releases them. These male mosquitoes do not bite humans, their function is to mate with local wild female Aedes aegypti. The eggs laid after mating will not hatch, and after a period of time, the number of Aedes mosquitoes that transmit dengue fever in cities will decrease. And Singapore does indeed have dengue fever, but it is very rare. One case was reported on the 18th, but the likelihood of being bitten indoors is very low. At least I can count the number of times I have been bitten indoors with just one hand, but if I am outdoors, especially on paths with weeds and water channels, there are still quite a few mosquitoes.