Gan Island Post 26th May 1972

Control of mosquitoes is achieved by two methods:
a. Prevention of breeding.
b. Use of insecticides against larvae, pupae and adults.
The most common breeding sites found on Gan are: Tins, Bottles, open surface drains, fire buckets, discarded
buckets, basins, large tins, old tyres, coconut husks, static puddles, WC's and cisterns.
Prevention of breeding in the first seven is a relatively simple matter. The old Indian Army had a day designated
as a dry day once a week. On this day personnel of all sections would scour the surrounds of their buildings
and any discarded articles capable of holding even small quantities of water were collected and placed in dustbins.
Articles such as fire buckets were emptied, cleaned and refilled. The repetition of this practice every seventh day
effectively breaks the ten-day cycle necessary for development from egg to adult. Any Section found to be
harbouring breeding sites within their surrounds were in for a severe rocket. - GAN???
Defective plumbing of any type should, of course, be reported on form 5653. The use of larvicide's and
insecticides is restricted to trained personnel. All buildings on camp are sprayed periodically with residual
insecticides. All female mosquitoes rest either before or after taking a blood meal and it is during these rests
that she will absorb a lethal dose of insecticide. If you have just been bitten by a type that rests afterwards then
it may afford some small measure of consolation to know that the bastard is going to die anyhow!
The swing-fogging that is carried out almost daily in the domestic area is aimed at a quick knock-down of adults
and has no residual properties. Incidentally, although it may not taste very nice when you are in the middle of
your breakfast, the insecticide used in the swing-fog is harmless to man.
As can be expected on an island only five feet above sea level and with an annual rainfall somewhere in the
region of one hundred inches, large areas of Gan do remain water-logged for long periods following prolonged
rain. These areas are treated with larvicide's and waste oil, which, since it is not water miscible, drowns the
larvae by sealing them off from oxygen.
Well, that's it, and the next time the BBC Forces Chance quiz team come to Gan you can tell them quite
authoritatively that mosquitoes do not sting
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