pyrethrins


Also found in: Dictionary, Encyclopedia.
Related to pyrethrins: permethrin, pyrethroids, Piperonyl butoxide

py·re·thrins

(pī-rē'thrinz), Do not confuse this word wih permethrin.
Insecticidal constituents of pyrethrum flowers.

pyrethrins

(pī-rē′thrĭnz)
The general name given to substances derived from pyrethrum flowers (chrysanthemums); used as insecticides.
References in periodicals archive ?
Five min after sprays, Fastac and all the pyrethrins (Pyrethrum 5EW, Pyrethrum EWC, and Agroblaster) caused a higher percent mortality of Antestia bug than that of the neonicotinoid insecticide, imidacloprid (Table 1).
Flea collars will have synthetic pyrethrins, such as flumethrin, deltatmethrin, or zetacypermethrin.
Approximately 93% of cases involved exposure to the TRF active ingredients pyrethroid (78%) or pyrethrin (24%).
From the results, it could be calculated that the contact toxicity of (2E, 4E)-2,4-nonadienal against booklice was only 1.7 times less than that of pyrethrins ([LD.sub.50] = 18.72 [micro]g/[cm.sup.2]).
Organic farming allows the use of herbal preparations, containing naturally-occurring toxins like rotenone, pyrethrins, azadirachtin, nicotine and capsaicin; traditional compounds containing copper and sulfur, and a few synthetic chemical exceptions like methyl bromide as a soil fumigant.
You should also keep your animals away from: | Blue-green algae, recently reported present in a Merseyside park lake; | Paracetamol, ibuprofen, antidepressants and other medications; | Recreational drugs; | Chocolate; | Blood thinning medications; | Vitamin D pills; | Fertilisers, including bonemeal; | Insecticides, including pyrethroid or pyrethrins; | Lillies; | Xylitol/E967 often contained in chewing gum and sweets; | Anti-freeze; | Dishwasher tablets, bleach.
According to the EPA (2016b), there are over 300 registered products in seven categories that will kill bed bugs: Pyrethrins, pyrethroids, dessicants, biochemical, pyrroles, neonicotinoids, and insect growth regulators.
Pyrethrins and pyrethroids are considered generally harmless to people when used according to directions,45 unlike organophosphates, which can be toxic to species other than the targeted insects--including humans.
The American study says mutations are turning nits into "super lice", which can't be killed by many of the remedies which contain pyrethrins and permethrins.
Pyrethrins and pyrethroids: They are the most common compounds used to control bed bugs and other indoor pests.
Six individual chemical compounds called pyrethrins have active insecticidal and acaracidal properties in the pyrethrum extract.
Further, pyrethrins bind to sodium channels that occur along the length of nerve cells causing disruption on the nervous system [21].