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What is deltamethrin?

  • Deltamethrin is a pyrethroyd insecticide that kills insects on contact and through digestion. It is a synthetic insecticide based on natural pyrethrins.
  • Deltamethrin products are some of the most popular and widely used insecticides in the world.

  • What is deltamethrin used for?

  • Deltamethrin has a very broad spectrum of insect control and is effective against cockroaches, flies, fleas, beetles, bed bugs and a large number of other insects and bugs.

  • How does deltamethrin work?

  • Deltamethrin causes death due to irreversible damage to the nervous system. It rapidly paralyses the insect's nervous system resulting in a quick 'knockdown' of the insect.

  • How toxic is deltamethrin?

  • Deltamethrin is highly toxic to insects.
  • Mammalian exposure to deltamethrin is classified as safe provided it is used in accordance with the product label.

  • What effect does deltamethrin have on wildlife?

  • As is common with all pyrethroids, deltamethrin has high toxicity to bees.
  • It is extremely toxic to aquatic insects and fish.

  • Signs of toxicity in humans.

  • Deltamethrin is a neurotoxin, it attacks the nervous system of insects and mammals.
  • Skin contact can lead to tingling or reddening of the skin local to the application. If taken in through the eyes or mouth, a common symptom is facial paraesthesia, which can feel like many different abnormal sensations, including burning, partial numbness, 'pins and needles', skin crawling, etc.
  • Recently, in South Africa, residues of deltamethrin were found in breast milk, together with DDT, in an area that used DDT treatment for malaria control, as well as pyrethroids in small-scale agriculture.


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