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The
four stages of the typical fly (6-7 days);
1.
Egg (maggots)
2.
Lavae (with head)
3.
Pupa (chestnut brown pod)
4.
Adult (winged and ready to mate thus starting the
cycle all over again)
The
female fly will produce 1,000 eggs a month!
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from previous page)
Management
There are four basic principles of pest management important in
controlling house flies: sanitation, exclusion, non-chemical measures,
and chemical methods. These are listed in order of lasting effectiveness.
Sanitation - Flies cannot breed in large numbers
if their food sources are limited. Do not allow such materials as
manure, garbage, grass clippings, weed piles or other decaying organic
matter to accumulate. Keep trash cans clean and tightly covered.
Be careful not to wash garbage cans where the rinse water might
drain into the soil; flies can breed in soil full of organic matter.
Dry out maggoty garbage or dispose of it in fly proof containers
or landfills.
Exclusion - Flies can be kept outside of homes
by the use of window and door screens. Make sure screens are tight-fitting
without holes. Keep doors closed with no openings at the top or
bottom. There should be no openings around water or gas pipes or
electrical conduits that feed into the building. Caulk or plug any
openings. Ventilation holes can be a way for flies to enter a building.
Ventilation is important to maintaining adequate air circulation
within the building, but screening must be used to exclude flies.
Non-chemical Measures - The use of such devices as ultraviolet light
traps, sticky fly traps, fly swatters, baited fly traps, etc. can
eliminate many flies from inside a home. A fly swatter is an economical
control method for the occasional fly.
Chemical
Control - Exterior applications of insecticides may offer
some relief from infestations where the task of completely sealing
the exterior is difficult or impossible. Applications should consist
of a synthetic pyrethroid (i.e. deltamethrin, cyfluthrin, lambda-cyhalothrin,
cypermethrin, sumithrin or tralomethrin) and should be applied by
a licensed pest control operator when flies begin to appear. Unfortunately,
because insecticides are broken down by sunlight, the residual effect
of the material will be greatly decreased and may not kill flies
much beyond several days or a week. If flies are numerous inside
your home, you can use a space spray (aerosol) labeled for flying
insects. Most space sprays contain pyrethrins for quick knockdown.
Aerosols give temporary relief, however. If you have many flies
inside, you would be wise to find out why they are there and take
steps to relieve the problem through sanitation and exclusion.
Warning
Pesticides are poisonous. Read and follow directions and
safety precautions on labels. Handle carefully and store in original
labeled containers out of the reach of children, pets, and livestock.
Dispose of empty containers right away, in a safe manner and place.
Do not contaminate forage, streams, or ponds.
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