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breeding
treatment
repellents
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breeding
The number one source of mosquito
breeding in urban environments is containers. Most common
containers found breeding include tires,
kiddie pools, buckets, wheelbarrows, flower pot basins, rain
barrels, cans, bird baths and rain spout extensions.
Mosquitoes must have water in order to develop. The eggs are
lain in the water and there they develop into larvae (lar-va).
The larvae feed on organic matter in the water and grow until they
reach the pupal stage. The pupae (pew-pa) shell then breaks
open and a flying adult emerges. The whole cycle can be done
in as little as seven days but usually averages between 7-10 days.
The amazing thing is that they only need a small amount of water to
breed in. It's possible for 1/4 cup of water to produce
hundreds of mosquitoes throughout the summer. By eliminating
any standing water the breeding cycle of the mosquito is broken.
This is the most effective means of control.
treatment
Several factors effect what type of
treatment will be necessary when addressing a mosquito problem.
Species identification, location of the breeding source,
developmental stage of the larvae and population of nearby residents
will determine what chemical or biological treatment should be used.
Sometimes no control is even necessary. Larviciding agents
used in Cabarrus County come in a liquid and solid form. The
liquid is a
monomolecular
film
which is sprayed on the surface of the water. It works to
decrease the surface tension which inhibits the larvae's air tube
from attaching to the surface to get air. The solid form is a
BTi briquet (often called a mosquito dunk) that slowly dissolves
in the water where it is ingested by the larvae. It then
inhibits their growth preventing them from developing into adults.
These larvicides are specific to mosquitoes therefore having very
little effect on the environment and other non-target
organisms. Biological control may be feasible if the area can
sustain fish year round. Gambusia are used because
they are native fish that feed on mosquito larvae. They can be
a great solution to some long term problems.
repellents
The most effective protection from
mosquito bites is a combination of repellent containing the
ingredient DEET (10% max of children; 30% max for adults) and
wearing long shirts and pants. Using
bug zappers
actually kill more mosquito-eating insects then the mosquitoes
themselves. Skin-so-soft does work,
but only for 20 minutes at a time. Citronella candles
are effective at deterring mosquitoes only with a 15 foot range of
the source. Two new repellents have been added to the the
approved list from CDC. These are: lemon eucalyptus oil and
Picaridin. The ingredient picaridin is also listed as KBR
3023. Read a
WebMD article about repellent tests. |