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Fipronil has been used against many different pests on different crops. It is used against major lepidopteran (moth, butterfly, etc.) and orthopteran (grasshopper, locust, etc.) pests on a range of field and horticultural crops and against coleopteran (beetle) larvae in soils.
Chemical structure of fipronil, a common phenylpyrazole insecticide. Phenylpyrazole insecticides are a class of chemically-related broad-spectrum insecticides. [1] The chemical structures of these insecticides are characterized by a central pyrazole ring with a phenyl group attached to one of the nitrogen atoms of the pyrazole.
Fipronil acts as an insecticide with contact, and stomach action. It is sparingly soluble in water and is stable at normal temperatures for one year. Fipronil is an extremely active molecule and is a potent disruptor of the insect central nervous system. [5] Fipronil bait is more effective and kills faster than Hydramethylnon.
A 2014 review took a broader look at the ecological impact of neonicotinoids and fipronil, finding negative effects on invertebrates, but not microbes or fish. [125] Although not yet conclusive, there is increasing evidence that neonicotinoids can have negative effects on pollinating insects other than bees, including monarch butterflies .
Insecticides are pesticides used to kill insects. [1] They include ovicides and larvicides used against insect eggs and larvae, respectively. The major use of insecticides is in agriculture, but they are also used in home and garden settings, industrial buildings, for vector control, and control of insect parasites of animals and humans.
A comparison of 3 insecticides (selamectin, fipronil, imidacloprid) showed that selamectin reduced larval cat fleas ≥93.5% after 24 h at doses of ≥0.3 μg. In contrast, at 24 h neither fipronil nor imidacloprid reached 90% reduction, even at the highest doses tested (0.5 μg for fipronil and 5.0 μg for imidacloprid).
Etofenprox is used undiluted for ultra low volume aerosol applications or diluted with a diluent such as mineral oil for direct applications, for the control of pest species in or near residential, industrial, commercial, urban, recreational areas, woodlands, golf courses, and other areas where these pests are a problem.
It is also used as a prevention for flea control on household pets, for killing indoor and outdoor ants and roaches. [5] Methods of application include aerosols, bait, carpet powders, foggers, shampoos and pet collars. [6] Pyriproxyfen is a juvenile hormone analog (IRAC group 7C) and an insect growth regulator. [7]