It's not that the INCENSE isn't working on the mosquito, it's that the INCENSE is not working on your skin! That's the important thing right? What the incense can't do is apply enough DEET to your skin. DEET, is the most common active ingredient in insect repellents. It is intended to be applied to the skin or to clothing, and is primarily used to protect against insect bites. In particular, DEET protects against tick bites (which transmit Lyme disease, several rickettsioses, tick-borne meningoencephalitis and other tick-borne diseases) and mosquito bites (which transmit dengue fever, West Nile virus, Eastern Equine Encephalitis, and malaria).
DEET was developed by the United States Army, following its experience of jungle warfare during World War II. It entered military use in 1946 and civilian use in 1957. Originally tested as a pesticide on farm fields, the US Government applied it for war time usage, particularly when in Vietnam and around that region of Asia.
DEET is believed to work by blocking insect olfactory receptors for 1-octen-3-ol, a volatile substance that is contained in human sweat and breath. DEET effectively ';blinds'; the insect's senses so that the biting/feeding instinct is not triggered by humans or animals which produce these chemicals. DEET does not appear to affect the insect's ability to smell carbon dioxide, as had been suspected earlier.
DEET is often sold and used in concentrations up to 100%. Consumer Reports found a direct correlation between DEET concentration and hours of protection against insect bites. 100% DEET was found to offer up to 12 hours of protection while several lower concentration DEET formulations (20%-34%) offered 3-6 hours of protection.[3] Other research has corroborated the effectiveness of DEET.[4] The Center for Disease Control recommends 30-50% DEET to prevent the spread of pathogens carried by insects.
As a precaution, manufacturers advise that DEET products should not be used under clothing or on damaged skin, and that preparations be washed off after they are no longer needed or between applications.[5] DEET can act as an irritant;[1] in rare cases, it may cause skin reactions.[5]
In the DEET Reregistration Eligibility Decision (RED), the EPA reported 14 to 46 cases of potential DEET-associated seizures, including 4 deaths. The EPA states: '; ..it does appear that some cases are likely related to DEET toxicity,'; but observed that with 30% of the US population using DEET, the likely seizure rate is only about one per 100 million users.[6]
The Pesticide Information Project of Cooperative Extension Offices of Cornell University states that ';Everglades National Park employees having extensive Deet exposure were more likely to have insomnia, mood disturbances and impaired cognitive function than were lesser exposed co-workers';. [7]
The American Academy of Pediatrics found no difference in safety for children, between products containing 10% and 30% DEET, when used as directed, but recommends that DEET not be used on infants less than two months old.
Alternatives
Studies have shown eucalyptus-based repellents which contain the natural oil eucalyptol to be a highly effective and nontoxic alternative to DEET.[12]
Icaridin is another insect repellent of strength comparable to DEET, but it is less irritating and doesn't dissolve plastics.[citation needed]
A test of various marketed insect repellents by an independent consumer organization found that synthetic repellents, including DEET, were more effective than repellents with 鈥榥atural鈥?active ingredients. All the synthetics gave almost 100% repellency for the first 2 hours, whereas the natural repellent products tested were most effective for the first 30-60 minutes and then required reapplication to be effective over several hours.[13]
Citronella oil has been used as an insect repellent for 60 years.[14] Its mosquito repellency qualities have been verified by research,[15] [16][17] however, the repellency duration of DEET is much greater.[18] While most essential oil based repellents are not as effective as DEET,[18][19] research also shows that some essential oil based formulas can be comparable to DEET, and somewhat better specifically as mosquito repellant.Why Indian mosquito-repellent incense does not enough work?
Actually mosquitoes are not killed, but repel %26amp; go away from the repellent.
pkn
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