Prior to the invention of modern pesticides, pest insects were managed through biological control.
Exotic pests were originally successfully managed biologically by natural enemies gathered from the country or region where the problem originated (classical control).
Numerous open-field and greenhouse pests have been successfully controlled with augmentation, and native predators and parasitoids have been used in conservation biological control programs.
Acute impacts, often known as short-term negative health effects, as well as chronic effects, which can develop months or years after exposure, are both possible with pesticides. Eyes that sting, blisters, rashes, blindness, nausea, light headedness, diarrhea, and even death are examples of acute health impacts.
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