Fly nets for protection from the Australian bush fly. which really not very bothersome. It is just one of an estimated 30,000 fly species that call Australia home.Unlike other types of flies — such as mosquitoes or horse flies — the bush fly is not after your blood. It prefers your sweat, saliva and tears.it doesn't bite. In effect, it works like a vacuum, sucking up your bodily secretions with its soft mouth.