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Questions and Answers
DEET stands for N,N-diethyl-3- ______
DEET stands for N,N-diethyl-3- ______
methylbenzamide
DEET was discovered by the US Department of Agriculture and patented by the US Army in ______
DEET was discovered by the US Department of Agriculture and patented by the US Army in ______
1946
DEET was allowed for public use in ______
DEET was allowed for public use in ______
1957
Picaridin was developed by ______ in the 1980s
Picaridin was developed by ______ in the 1980s
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A 20% picaridin spray and cream can provide ______ hours of mosquito protection
A 20% picaridin spray and cream can provide ______ hours of mosquito protection
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Before World War II, one of the main repellents in the market was dimethyl-phthalate discovered in ______
Before World War II, one of the main repellents in the market was dimethyl-phthalate discovered in ______
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Picaridin can be applied to the skin or clothing of humans using Pump sprays, liquids, aerosols, and ______
Picaridin can be applied to the skin or clothing of humans using Pump sprays, liquids, aerosols, and ______
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Natural repellents PMD and lemon-scented eucalyptus PMD ( p-menthane-3,8-diol ) derived from lemon-scented eucalyptus (Eucalyptus citriodora, Myrtaceae) leaves, and with good efficiency profile. A longer protection time compared to other plant-derived compounds because it is a monoterpene with low ______
Natural repellents PMD and lemon-scented eucalyptus PMD ( p-menthane-3,8-diol ) derived from lemon-scented eucalyptus (Eucalyptus citriodora, Myrtaceae) leaves, and with good efficiency profile. A longer protection time compared to other plant-derived compounds because it is a monoterpene with low ______
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Neem and methyl jasmonate The aromatic plants of the Meliaceae family contain substances of the limonoid group and insecticidal and repellent effects on ______
Neem and methyl jasmonate The aromatic plants of the Meliaceae family contain substances of the limonoid group and insecticidal and repellent effects on ______
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The major Advantages of Neem and methyl jasmonate are low cost, pleasant odor, and very high efficiency of ______-based repellents.
The major Advantages of Neem and methyl jasmonate are low cost, pleasant odor, and very high efficiency of ______-based repellents.
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Mosquito coil A mosquito-repelling incense commonly spiralled and manufactured with dried pyrethrum powder as the active component. Advantages 1.Low Cost 2.Widely available 3.Long lasting life period Disadvantages 1.Health Implications due to smoke emissions 2.Irritation and breathing issues 3.Chance of Physical ______
Mosquito coil A mosquito-repelling incense commonly spiralled and manufactured with dried pyrethrum powder as the active component. Advantages 1.Low Cost 2.Widely available 3.Long lasting life period Disadvantages 1.Health Implications due to smoke emissions 2.Irritation and breathing issues 3.Chance of Physical ______
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A Liquidator repellent has a graphite rod in the middle and the bottle is filled with Insecticides, Stabiliser/Anti-oxidant & perfume. The insecticide vaporizes and attacks the nervous system of mosquitoes. Advantages 1.All-round protection 2.Immediate Effect Disadvantages 1.Need Power backup 2.Exposure to smoke may cause Health Implications ______
A Liquidator repellent has a graphite rod in the middle and the bottle is filled with Insecticides, Stabiliser/Anti-oxidant & perfume. The insecticide vaporizes and attacks the nervous system of mosquitoes. Advantages 1.All-round protection 2.Immediate Effect Disadvantages 1.Need Power backup 2.Exposure to smoke may cause Health Implications ______
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Mosquito repellents are substances that are applied to skin, clothes, or other surfaces to prevent insects from biting people and feasting on their ______.
Mosquito repellents are substances that are applied to skin, clothes, or other surfaces to prevent insects from biting people and feasting on their ______.
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According to WHO, nearly 700 million people get infected by mosquito-borne diseases each year resulting in over one million deaths, with ~60% from children under 5 years. This emphasizes the importance of using effective ______.
According to WHO, nearly 700 million people get infected by mosquito-borne diseases each year resulting in over one million deaths, with ~60% from children under 5 years. This emphasizes the importance of using effective ______.
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The Pharaoh Sneferu used bed nets & essential oils as protection against mosquitoes, showcasing the early use of ______ as a mosquito repellent.
The Pharaoh Sneferu used bed nets & essential oils as protection against mosquitoes, showcasing the early use of ______ as a mosquito repellent.
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Mosquito-repellent plants have been used in various forms by different civilizations, including hanging bruised plants in houses, crude fumigants, and oil formulations applied to the skin or cloth, demonstrating the effectiveness of ______ as a natural repellent.
Mosquito-repellent plants have been used in various forms by different civilizations, including hanging bruised plants in houses, crude fumigants, and oil formulations applied to the skin or cloth, demonstrating the effectiveness of ______ as a natural repellent.
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Smoke is unquestionably the most widely used method of mosquito repellent, often by burning plants in rural tropics in spiral-shaped incenses like ______.
Smoke is unquestionably the most widely used method of mosquito repellent, often by burning plants in rural tropics in spiral-shaped incenses like ______.
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Mosquito repellents work by interfering with the insect's ______ system, located in the antennae, which consists of chemical receptors stimulated by lactic acid from warm-blooded animals.
Mosquito repellents work by interfering with the insect's ______ system, located in the antennae, which consists of chemical receptors stimulated by lactic acid from warm-blooded animals.
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Study Notes
Types of Mosquito Repellents
- Picaridin can be applied to skin or clothing using pump sprays, liquids, aerosols, and wipes.
- Natural repellents PMD and lemon-scented eucalyptus (p-menthane-3,8-diol) are derived from lemon-scented eucalyptus leaves and have a good efficiency profile.
- Neem and methyl jasmonate are aromatic plants with insecticidal and repellent effects on mosquitoes, with low cost, pleasant odor, and high efficiency.
Mosquito Coil Repellent
- Mosquito coils are a type of incense with dried pyrethrum powder as the active component.
- Advantages: low cost, widely available, and long-lasting.
- Disadvantages: health implications due to smoke emissions, irritation, and breathing issues, and chance of physical accidents.
Liquid Repellent
- Liquid repellents contain insecticides, stabilizers, and perfume.
- The insecticide vaporizes and attacks the nervous system of mosquitoes.
- Advantages: all-round protection and immediate effect.
- Disadvantages: need power backup, exposure to smoke may cause health implications.
Importance of Mosquito Repellents
- Mosquito repellents are substances that prevent insects from biting people and feasting on their blood.
- They aid in the prevention and control of mosquito-borne diseases outbreaks.
- According to WHO, nearly 700 million people get infected by mosquito-borne diseases each year, resulting in over one million deaths.
History of Mosquito Repellents
- The Pharaoh Sneferu used bed nets and essential oils as protection against mosquitoes around 2613-2589 BCE.
- Mosquito-repellent plants have been used in various forms by different civilizations, including hanging bruised plants in houses and crude fumigants.
Repelling Action
- Mosquito repellents work by interfering with the insect's homing system.
- The homing system is located in the antennae and consists of chemical receptors stimulated by lactic acid that naturally evaporates from the skin of warm-blooded animals.
Synthetic Repellents
- Before World War II, three main repellents in the market were dimethyl-phthalate, Indalon, and Rutgers 612.
- Over 6000 chemicals were tested between 1942 and 1947, resulting in the identification of multiple successful repellent chemistries.
DEET and Picaridin
- DEET (N,N-diethyl-3-methylbenzamide) is a standard and most effective broad-spectrum insect repellent component with a long-lasting effect.
- DEET was discovered by the US Department of Agriculture and patented by the US Army in 1946.
- Picaridin (1-piperidinecarboxylic acid 2-(2-hydroxyethyl)-1-methylpropyl ester) is a colorless, odorless repellent developed by Bayer in the 1980s.
- Picaridin's efficacy is superior to DEET's, and a 20% picaridin spray and cream can provide 12 hours of mosquito protection.
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Description
Test your knowledge on insect repellents such as Picaridin, PMD, Neem, and methyl jasmonate. Learn about their efficiency, application methods, and protection time compared to other plant-derived compounds.
