Insecticides are of chemical and biological origins and are used in agriculture, forestry, gardens, homes, and offices. They are also used to control vectors, such as mosquitoes and ticks, that are involved in spreading human and animal diseases
Space spraying is the dispersal of a liquid fog of insecticide into an area to kill adult insects. It has been regularly used in public health and pest control programmes, including use as an emergency response to malaria epidemics.