Pyrethroid insecticides are a special chemical class of active ingredients found in many of the modern insecticides found on store shelves and used by pest management professionals. The name pyrethroid means “pyrethrum-like” and refers to the origin of this class of pesticides.

How does pyrethroid insecticide work?

Pyrethroids are axonic excitotoxins, the toxic effects of which are mediated through preventing the closure of the voltage-gated sodium channels in the axonal membranes. The sodium channel is a membrane protein with a hydrophilic interior.

What insects does pyrethroid kill?

Pyrethrin is an insecticide that kills a wide range of insect pests including ants, mosquitoes, moths, flies and fleas. Pyrethrin kills off insects almost instantly upon contact. Only apply Pyrethrin in smaller, spot sprays. You do not need to use a lot.