insect repellent definition history cycle pdf

  • Home
  • /
  • insect repellent definition history cycle pdf

Benzoic acid | chemical compound | Britannica- insect repellent definition history cycle pdf ,Benzoic acid, a white, crystalline organic compound belonging to the family of carboxylic acids, widely used as a food preservative and in the manufacture of various cosmetics, dyes, plastics, and insect repellents.. First described in the 16th century, benzoic acid exists in many plants; it makes up about 20 percent of gum benzoin, a vegetable resin.The effectiveness of lemon grass as natural insect repellentAug 27, 2013·Technically, an insect repellent is any chemical or natural, that causes insects or other arthropods to make directed, oriented movements away from the source of repellent. And lemon grass can use as natural insect repellent (Helmenstine, 2011).



DATA EVALUATION RECORD - EPA Archives

the two insect repellent products considered here, weight-of-evidence approaches to dermal irritation (OPPTS Test Guideline 870.2500) and dermal sensitization (OPPTS 870.2600) were taken by the repellent manufacturer. Human experience and animal data on each component of the two insect repellent products was the first line of analysis, and

US EPA - Pesticides - Fact Sheet for Deet

History DEET was first registered in the U.S. in 1957 after first being developed by the U.S. Army in 1946 for use by military personnel in insect-infested areas. A Registration Standard for DEET was issued in De-cember, 1980 (PB81-207722), and a subsequent Data Call-In (DCI) for DEET (issued September, 1988) required additional animal and avian

CHAPTER 4 Bedbugs, fleas, lice, ticks and mites

Repellents Deet and other insect repellents are effective against bedbugs. They can be used by travellers who have to sleep in houses infested with the insects. However, repel-lents applied to the skin are unlikely to last the whole night. It is likely that burning mosquito coils offer some protection (see Chapter 1). Simple household measures

Generation of wood-waste vinegar and its effectiveness as ...

Wood vinegar as a pest insect repellent. Treatment R of 10 mL WV mixed with 200 g maize kernel resulted in the highest mortality compared to other treatments at 10 and 20 days after incubation (Table 4). These data indicated that, at the dose, WV was effective as an insect repellent, so the weevil did not find suitable food and eventually starved.

Zika virus - WHO

Key facts. Zika virus disease is caused by a virus transmitted primarily by Aedes mosquitoes, which bite during the day. Symptoms are generally mild and include fever, rash, conjunctivitis, muscle and joint pain, malaise or headache.

All about No-See-Ums in the south - they are very ...

Life Cycle of No-See-Ums. The no-see-um or biting midge goes through a four stage life cycle. Adults live only a few weeks, and during their lifetime can lay between 25 and 110 eggs every time they feed on blood. When they hatch, the larvae need moisture to develop, so adults tend to lay eggs around water sources or moist environments.

All about No-See-Ums in the south - they are very ...

Life Cycle of No-See-Ums. The no-see-um or biting midge goes through a four stage life cycle. Adults live only a few weeks, and during their lifetime can lay between 25 and 110 eggs every time they feed on blood. When they hatch, the larvae need moisture to develop, so adults tend to lay eggs around water sources or moist environments.

Repellents - American Mosquito Control Association

A 10% DEET-based repellent will typically last 90 minutes or so. A 30% product will last 5-6 hours. Wash repellent-treated skin after coming indoors. If a suspected reaction to insect repellents occurs, wash treated skin, and call a physician. Keep the repellent container so that you can tell the physician exactly what product you are using.

The effectiveness of lemon grass as natural insect repellent

Aug 27, 2013·Technically, an insect repellent is any chemical or natural, that causes insects or other arthropods to make directed, oriented movements away from the source of repellent. And lemon grass can use as natural insect repellent (Helmenstine, 2011).

An Introduction to Insecticides (4th edition) | Radcliffe ...

Before a more edified approach to insect olfaction and behavior was developed, it was wrongly assumed that if a substance was repugnant to humans it would likewise be repellent to annoying insects. In recent history, the repellents have been dimethyl phthalate, Indalone®, Rutgers 612®, dibutyl phthalate, various MGK® repellents, benzyl ...

Overview of Mosquito Control Practices in California

Mosquitoes have a life cycle that includes egg, larva, pupa, and adult. Standing water is required for the completion of every life stage except the adult. The speed of larval development depends on water temperature and may take from 4 days to more than a month for the mosquito to mature from egg to adult. Only adult mosquitoes can fly and bite.

Botanical Insecticides | Radcliffe's IPM World Textbook

By definition, an insecticide is a substance that performs a biocidal action on insects due to the nature of its chemical structure. For example, if we kill an insect for our insect museum using a cyanide killing jar we can say that cyanide has an insecticidal effect.

Insect-Repellent and Mosquitocidal Effects of ...

spatial repellent, and a catnip formulation have been registered by the EPA.17,18 Hence, there is a need to develop new, safer insect repellents with novel modes of action. (+)-Nootkatone is a naturally occurring sesquiterpene, known to possess very impressive insect repellent …

Final Report on the Safety Assessment of Ethyl Hexanediol

commercial names for this ingredient include Carbide 6-12, Compound 6-12 Insect Repellent, Repellent 612, and Rutgers 612 (Syracuse Research Corp., 1982). Chemical and Physical Properties Ethyl Hexanediol is a colorless, slightly viscous liquid (Hawley, 1971). Its chemical and physical properties are summarized in Table 1. Method of Manufacture

Emission Scenario Document for Product Type 19

Figure 3: Relevant life-cycle stages to be considered when assessing environmental emissions due ... an insect repellent on their skin..... 32 Table 3-9: Treated skin areas for horses, cats, and dogs as well as soil areas for emissions..... 35 Table 3-10: Emission scenario for calculating the release of repellents used on horses or pets due to ...

A systematic review of mosquito coils and passive ...

Dec 07, 2012·An excito-repellent is defined as a chemical that causes insects to make undirected movements that set them apart from insecticides . Excito-repellency results from insect’s physical contact with chemicals on treated surfaces or with vapour particles at a distance [8, 9].

insecticide | Description, Modes of Action, Types ...

Insecticide, any toxic substance that is used to kill insects. Such substances are used primarily to control pests that infest cultivated plants or to eliminate disease-carrying insects in specific areas. Learn more about the types, modes of penetration, uses, and environmental impacts of insecticides.

Efficacy of Some Commercially Available Insect Repellents ...

The most widely used insect repellent, DEET (N,N-diethyl-m-toluamide), has been in use for about 70 yr. DEET is considered a very safe repellent ( Osimitz and Grothaus 1995, Koren et al. 2003, Sudakin and Trevathan 2003). Nevertheless, fear of possible side effects of DEET and general chemophobia has resulted in the development of a multitude ...

(PDF) History of Insect Repellents - ResearchGate

insect-repellent chemicals called benzoquinones, and it was hypothesized that the anointing behavior was designed to deter biting insects. Laboratory studies went on to show a significant ...

Ethnobotanical study of some of mosquito repellent plants ...

Aug 07, 2008·The use of plant repellents against nuisance biting insects is common and its potential for malaria vector control requires evaluation in areas with different level of malaria endemicity. The essential oils of Ocimum suave and Ocimum kilimandscharicum were evaluated against malaria vectors in north-eastern Tanzania. An ethnobotanical study was conducted at Moshi in Kilimanjaro region …

Investigatory Project Mosquito Repellent - PHDessay.com

Jun 10, 2019·Insect repellent help prevent and control the outbreak of insect borne diseases such as malaria, dengue fever, yellow fever and other diseases. Pest animals commonly serving as vectors for disease include the insects flea fly and mosquito. Mosquitoes have complex methods of detecting hosts and different types of mosquitoes react to different ...

Natural Insecticides - Montana State University

hyphae then grow into the insect, feed on its body tis-sue, produce toxins, and reproduce. It takes up to seven days for the insect to die. If moist conditions (92 percent humidity or greater) are present during this time, B. bassiana will “bloom” and release more spores into the environment to repeat the cycle on other pest insects (Figure 1).

A systematic review of mosquito coils and passive ...

Dec 07, 2012·An excito-repellent is defined as a chemical that causes insects to make undirected movements that set them apart from insecticides . Excito-repellency results from insect’s physical contact with chemicals on treated surfaces or with vapour particles at a distance [8, 9].

Repellents - American Mosquito Control Association

A 10% DEET-based repellent will typically last 90 minutes or so. A 30% product will last 5-6 hours. Wash repellent-treated skin after coming indoors. If a suspected reaction to insect repellents occurs, wash treated skin, and call a physician. Keep the repellent container so that you can tell the physician exactly what product you are using.