Cyromazine is a triazine insect growth regulator used as an insecticide to control dipterans and some other insects. It is a cyclopropyl derivative of melamine. The exact mechanism of action of cyromazine against insects is unclear although it does affect the larval and pupal cuticles.
Cyromazine is a triazine insect growth regulator used as an insecticide to control dipterans and some other insects. It is a cyclopropyl derivative of melamine. The exact mechanism of action of cyromazine against insects is unclear although it does affect the larval and pupal cuticles.
In veterinary medicine, cyromazine is used as an ectoparasiticide. It has been used since 1979 in Australia and New Zealand to control and prevent flystrike of sheep by blowfly. The exact mechanism of action has not been determined, but it is non-toxic to mammals and does not target the nervous system. It is not toxic to adult flies, only having its effect on larval forms by disrupting the moulting process. It can give 8-10 weeks protection when applied topically. Because of this it has little effect on existing infestations and is commonly used prophylactically. In 2011 resistance was detected in Lucilia cuprina to cyromazine from infested sheep that failed to be protected following treatment.
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