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Fipronil is a broad-spectrum insecticide that belongs to the phenylpyrazole insecticide class. [3] Fipronil disrupts the insect central nervous system by blocking the ligand-gated ion channel of the GABA A receptor (IRAC group 2B) and glutamate-gated chloride (GluCl) channels. This causes hyperexcitation of contaminated insects' nerves and muscles.
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).
Acaricides, which kill mites and ticks, are not strictly insecticides, but are usually classified together with insecticides. Some insecticides (including common bug sprays) are effective against other non-insect arthropods as well, such as scorpions , spiders , etc. Insecticides are distinct from insect repellents , which repel but do not kill.
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.
Pyriprole, sold under the brand name Prac-tic, is a veterinary medication used for dogs against external parasites such as fleas and ticks. [3] [4] Pyriprole is a phenyl pyrazole derivative similar to fipronil. [citation needed] Although introduced (in the 2000s) and under patent protection it is a "classic" insecticide.
A food safety expert weighs in on flour bugs, also known as weevils, that can infest your pantry after one TikToker found her flour infested with the crawlers.
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