Flies can regularly be found in homes and businesses across Hong Kong. Some species are more common than others and are attracted to different environments suited to their natural habits and lifecycle. Knowing about the size, habits, seasonality and lifecycle of different fly species, can help to identify the most effective fly control methods.
FACT: On average, the adult housefly will live for around 30 days. They go through a complete four-stage cycle that consists of egg, larva, pupa and adult stages.
House flies are major carriers of disease and can infest all types of premises. They are attracted to all types of food, including human food, pet food, animal feed, food waste and even faeces. Seeing adult flies is usually the most common sign of activity and a potential problem. Larvae may also be seen as they crawl out of breeding material to pupate.
House flies are able to quickly mature from an egg to an adult. They breed in moist decaying vegetable matter eg. in uncovered dustbin or pet food.
Once indoors, house flies can be found resting on walls, floors or ceilings. Outdoors they can be seen on plants, the ground, fences, compost heaps and rubbish bins.
At night them they prefer to rest near food sources approx. 5 to 15 feet off the ground.
Bluebottle flies (also known as Blow fly) can often be seen hovering around dustbins. These scavengers are attracted to pet faeces and dead animals and as such are known carriers of disease.
Their name originates from their iridescent colours that are similar to coloured bottles.
Adult sand flies can be seen from April to September. They live on sandy riverbanks with an open habitat free of shading trees.
Females prefer to lay their eggs in damp soil or in the water.
Fruit flies are commonly found infesting fruit or hovering around fermenting residues found in pubs, fruit orchards & vegetables plots and breweries.
Drain flies are often associated with sewage beds, where larvae feed on sludge–like organic matter. They are also known by a variety of names; drain fly, sewage fly and moth fly are a few examples.
(Family - Sarcophagidae)
Horse flies are a particular pest to livestock. Relentless biting attacks by females can result in reduced weight gain in some animals.
Male horse flies are mainly pollen and nectar feeders and are most active during daylight hours.
Horse fly bites can be very painful for humans too.They have mouth parts that work like miniature knives, which they use to slash open the skin with a scissor–like motion.
Over 50 years of experience protecting Hong Kong homes and businesses from flies