FILTER FLIES
Filter flies are small, winged flies with hairy bodies. They are nocturnal
creatures, and they like to dwell in damp places. You can often see them in
bathrooms and sewage disposal plants. Their larvae (which are brownish and
cream-coloured) are usually placed in aquatic areas, such as the bathroom sinks.
Do not let their harmless appearances fool you as they can also be a health hazard
to human beings. These filter flies are capable of transmitting various tropical
diseases.