An organophosphorous insecticide available commercially in the form of granules or concentrated emulsions, used to combat mosquitoes but also used therapeutically as an external insecticide.
For etiology, clinical features, lesions, treatment and investigations, see Organophosphorous compounds

[toxic.gif] Toxicity
Oral doses in mg/kg or concentrations in mg/l:
LD50 rats 1000-8600
  chickens 2528
  ducks >2000
dogs 270-360
LC50 (48 h) fish 1.5