An organophosphate pesticide . Malathion and parathion are other well-known organophosphate pesticides. The organophosphates inhibit the action of the enzyme cholinesterase, a critical component of the chain by which messages are passed from one nerve cell to the next. They are highly effective against a wide range of pests. However, since they tend to affect the human nervous system in the same way they affect insects, they tend to be dangerous to humans, wildlife , and the environment . One of the most widelyused lawn chemicals , diazinon has been implicated in killing songbirds, pet dogs and cats, and causing near fatal poisonings in humans. The EPA banned its use on golf courses and sod farms after numerous reports of its killing ducks, geese, and other birds.
See also Cholinesterase inhibitor