There is no point of the NEA to do routine checks of mosquitoes
around S'pore housing estates, because all of them are bred in SAF
outfield trainig grounds. If you ever enter the thick vegetations
in outfield training, every square foot you can find mosquitoes.
Actually there's no sandfly in these areas, and soldiers often
thought that when their skin itch but hearing no buzzing sound, it
must be sandflies. Wrong. Just on a lamp and you can see those
'wild' mosquitoes biting through your uniforms at night.
There are 3 types of mozzies in outfield:
1. Black with white stripes. Their bites will heal pretty fast,
within 6 hours.
2. All black. Their bites are slightly longer to heal, about 1 to 2
days, and will be gone. Not a problem.
3. Brown to black brown slim 'silent flying' type. This is the
famous 'commando mozzies' which cause the 'boxing gloves' effect.
They are not as noisy but they are wild and extremely savage. They
don't hover around but sting instantly the moment they sense heat
of blood flow on your skin, like a bee. Bite takes about a week to
heal completely. Few people know that they are the cause of fever
during outfields. Thier bites are mistaken for sandflies. Anyway,
they are huge and slim and not as noisy as other types.
In some areas there're so much mozzies at night that you can find a
swarm of 20 hovering around you. Take a look at the ponds and
streams nearby and you find larva-infested water. All soldiers can
swear that mosquitoes come from the forest, that is, if they're
smart enough to realise it. 
