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Electric insect killer ?

Discussion in 'Electronic Basics' started by [email protected], Feb 23, 2007.

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  1. Guest

    Recently, our housing estate was infected with mosquito due to the
    non- work schedule at a
    nearby construction site.So, i bought three unit electric mosquito &
    insect killer to help erodicate the problem. Although i switched on
    throughout the night, not a single mosquito was caught.My bare hands
    could do a much better job !
    Is the UV-A ray effective to attract the mosquito and are the ray
    harmful to us ? Would like some suggestion and advice, Thanks.
  2. Mosquitos like CO2 (carbon dioxide), they also like dark colors and warmth
    resembling a mammal. I'd look more towards the infra-red end of the
    spectrum, but I'm guessing.
  3. Mosquitoes aren't attracted to UV. Try a Mosquito Magnet



  4. Meat Plow

    Meat Plow Guest

    Hang some dry ice underneath it.
  5. Lord Garth

    Lord Garth Guest

    My brother-in-law would hang his bug zapper on the patio since it was
    near the power outlet and there was a hook. Not a thought that the bugs
    are then attracted to where he was located....

    I recall a vacuum assisted version from my childhood years on the island.
    A fan would draw the bugs into the grid.
  6. Meat Plow

    Meat Plow Guest

    Yeh, you don't want to put a zapper close to where your activities are. I
    always put my 50 feet or so away. And it did work very well so I don't
    know what the OP was talking about, the "Black Light" FL tubes did attract
    them well along with every other flying thing.
    version from my childhood years on the
    Around here the local health department collects them with dry ice traps
    to test them for the West Nile virus. And I was under the impression that
    some of those available on the consumer end used something similar, maybe
    a canister of CO2 gas?????????????
  7. Lord Garth

    Lord Garth Guest

    The version I'm aware of burns propane to create CO2.

    The UV lamps in the above vacuum unit seemed to function quite well as the
    catch bag was usually full.

    Yellow fever was the enemy.

    My brother and I were about a half mile from the house on an estuary. We
    plinking. The wind shifted from the north and we began to hear an
    noise. Turns out to have been about 300 trillion mosquitoes coming across
    bay from the mainland swamps.

    We run back to the house as fast as we could! This is also the last time I
    seeing DDT being fogged from a truck.
  8. Meat Plow

    Meat Plow Guest

    I go into the north west region of lake Winnipeg for fishing and the
    insects are atrocious. Where was it that you encountered all those
    mosquitoes? You mentioned yellow fever so that's what Asia?
  9. Lord Garth

    Lord Garth Guest

    That would be Galveston, Texas. Once the yellow fever capitol of the US.
    Actually, yellow fever was never really any concern of mine. The epidemics
    were largely before my time.

    The fish growing in the estuary certainly need the mosquito larvae for food
    so mass extermination had its effect on our fish and bird populations. The
    good news is that as of about 15 years ago, the brown pelican is back
    along with egrets and the occasional pink flamingo. The DDT almost made
    them extinct around home.

    I was visiting a cousin in the Camrose area...there were indeed many insects
    around the lake however, these bugs didn't seem to like my "taste".
  10. jasen

    jasen Guest

    I saw some in tv that used a tank of LPG, which they converted in the
    normal fashion to CO2. creating warmth and humidity in the process
    things which also attract mozzies

    I think some are also available that use yeast and sugar instead.

  11. Back around early 1978 or so, I made a homebrew bugzapper and tried
    different lamps in it.

    My findings:

    1. Best fluorescent lamp was "blue", as in /B color code, mainly
    available in 20 watt and 40 watt, 2-foot/4-foot, T12 (1.5 inch diameter)
    sizes. BLB and BL did not work as well, with BLB being the worse of those
    two. Somehow I suspect wider bandwidth and color like that of sky help,
    although including UV with this probably helps. Maybe 05 actinic will do
    well, but selection of sizes could be very limited.

    2. Fluorescent lamps appeared to me in my tests to attract insects better
    if they are fed filtered DC (or maybe AC of very high frequency). I have
    heard a bit that insects actually see 120 Hz flicker.

    Keep in mind that one needs a resistor in series with a fluorescent lamp
    with DC. In addition, an inductor in series with the resistor helps if
    you use the "preheat" starting method.

    3. Mosquitoes are not that phototropic. The main lure of the particular
    ones that bite are the scent of CO2 and maybe in combination with
    perspiration scent and maybe with some sensation of warmth - that is how
    biting mosquitoes find their prey. And, only the females bite.

    Light/UV does a better job of attracting a fair number of other insects
    - including ones that attract natural enemies of mosquitoes. I suspect
    you don't want mosquito enemies in your immediate neighborhood to find
    your immediate neighborhood low on food!

    - Don Klipstein ()
  12. See for a lot of info on this.



  13. Si Ballenger

    Si Ballenger Guest

    The UV insect zappers kill a lot of insects (many may actually be
    beneficial), but "body count" studys of the insects killed have
    found that few (maybe 1%) that are killed are actually mosquitos.
  14. Ross Herbert

    Ross Herbert Guest

    As others have mentioned the humble mozzie is not attracted by UV but
    rather by CO2, moisture, and warmth. Many commercial mosquito traps
    use some form of attractant to get them into a semi-enclosed space and
    to then drown or poison them by some means. One low cost scheme being
    developed in Australia plans to use bio-degradable cans or buckets
    made of corn starch which have a quantity of environmentally safe
    liquid insecticide at the bottom. The idea is for the female
    mosquitoes to lay their eggs in the liquid before flying off. The
    female is not killed but all the eggs are. The buckets are distributed
    as necessary to control mosquito breeding rather than to kill adult

    Eventually (about 6 weeks) the bucket degrades and releases any
    trapped liquid so that it does not become a breeding spot for other
    mosquitoes when it fills with rain. This saves any ongoing maintenance
    and the need for periodic emptying.

    Here's one commercial system which would be suitable for a housing

    As an aside, I thought there might be some on the NG who would be
    interested in Starkey's latest Luratrap product.

    The question is, 'would it be effective?'
  15. amdx

    amdx Guest


    Go to the source of the problem!
    Solve that.
    Get the neighbors involved, here in Florida the county
    would be interested in removing the production site.
  16. Allen Bong

    Allen Bong Guest

    I have read the mosquito magnet commercial and found a cheaper and
    similar product using similar principles. It says it was designed in
    Korea and there is a still cheaper one if you scroll to the bottom.
    At 1/10 of the cost of the mosquito magnet, why not give it a shot if
    all other methods fail.

    FYI, I am not an employee or related to the commercial's company

  17. Judging by the picture it collects moths not mosquitoes.



  18. Allen Bong

    Allen Bong Guest

    May be that's why both of them start be "mo"!

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