Insecticides are chemical agents used to control and eliminate insects that pose threats to crops, livestock, or human health. They come in various forms such as sprays, powders, or baits, targeting specific pests like mosquitoes, ants, or agricultural pests. Insecticides work by disrupting insect nervous systems, affecting their behavior, growth, or reproduction. Proper application is crucial for effective pest management while minimizing environmental impact and ensuring safety for humans and non-target species.