Pest are destructive insects or animals, which are harmful for crops, livestock, and food. Pest control includes the beneficial action of parasites, pathogens, and predators in managing pests and avoiding pest infestation. Agricultural pests belong to a broad spectrum of organisms, including insects, mites, ticks, mice, rats, other rodents, snails, nematodes, slugs, fungi, bacteria, weeds, viruses, and other pathogens.