I do not like insects Because flies cause nuisance because it flies swarming people and food. The quarantine species. By Bluebottle flies can be disease vectors over the house.Cholera, typhoid fever, dysentery, bacterial infection that can cause digestive disorders and some types of parasite eggs. By the pathogen or parasite to track the fly, such as the mouth, legs and torso is covered with hair.Excretion and can be put out while flies swarm or food. Larvae of flies cause disease as well, from which the larvae bore into the tissue.