Definitions for "Permethrin"
A topical insecticide, C21H20CL2O3, used to treat head lice and nits, scabies, and various species of ticks. Permethrin is the active ingredient used in the over-the-counter product, Nix.
( Beetle Outbreak) - a synthetic pyrethrin (pyrethrins are oily liquid esters having insecticidal properties and occurring in the flowers of pyrethrum) used as an insecticide.
A pyrethroid insecticide.
Eye and skin irritant. Can cause sudden swelling of face, eyelids, lips, mouth, and throat tissues, as well as hay fever-like symptoms. Carcinogenic. Neurotoxic. Used in some household and garden pesticides, and pet flea-control products.