Would you ever eat food without washing your hands, say after cleaning up your dog’s poop or taking the trash out? I’m sure the answer is a resounding no, but what if a pesky housefly just happened to sit on the food you’re about to eat?

Eating food that house flies sit on is almost the same as, if not worse than eating food without proper hand sanitation after touching garbage.

Why? Because flies aren’t just a pesky nuisance, they’re organisms that thrive in unhealthy environments, such as sewage and garbage. They bring all the germs and diseases right into your homes.

In this article, we’ll discuss what you need to know about flies, the diseases they cause, as well as their control and their management.


What is a fly?

Musca domestica, or the common house fly, is a pest that thrives all over the world. Irrespective of geological variations, most typically persistent during the monsoon season.

The female fly is typically larger than the male. The female mates only once in its life and stores the sperm. It lays about 100 eggs at a time, on dead, decaying matter, like feces, wet waste, and such. The eggs hatch to release larvae that feed on semi-solid waste they’re born into and develop into adults, and the cycle repeats.

There are different types of flies:

  • Bluebottle flies
  • Drain flies
  • Fruit flies

Depending on the types of flies, you may have to deal with different problems.

Are fruit flies harmful? You bet they are. Despite its innocent name, fruit flies that thrive on decaying fruit are extremely dangerous.

Are drain flies harmful? Drain flies are flies that emerge from stagnant drainage water and are a hotspot for many dangerous diseases.

Bluebottle flies originate from dead remains of animals and cause many lethal infections.


Why are house flies a problem?

According to the World Health Organisation, or WHO, due to the major part of the growth and development of house flies occurring in an unhygienic environment, they become carriers of extremely dangerous diseases.

These diseases are carried right into your homes by the fly, just landing on the food you eat, the water you drink, or even the clothes you wear.


Do flies carry disease?

Yes. Flies carry multiple diseases. Here are a few of the most common yet dangerous ones:

Typhoid fever

Typhoid fever is a severe fever caused due to infected food and/or water.

The bacteria infect your intestines, causing many gastrointestinal abnormalities like abdominal pain, nausea, vomiting, diarrhea, rashes, fever, and weight loss.

Studies showed that the bacteria that causes typhoid was present in the legs of the common housefly, causing the disease in otherwise healthy individuals.


Cholera is another incredibly dangerous infection of the intestines caused by the organism Vibrio cholerae.

This occurs due to contaminated water that causes incessant diarrhea or rice-watery stools, leading to severe dehydration and death if not treated promptly. The common housefly is one of the most important vectors of this life-threatening disease.


Dysentery is a disease of the intestines causing blood-filled stools and is fatal if not treated almost immediately after infection.

It is caused due to contaminated food and water. The most common cause of infection is, you guessed it right, the housefly.


The bacteria shigella causes a life-threatening condition, inflaming the intestines, leading to blood-filled stools and vomit, which need prompt medical diagnosis and intensive treatment.

Yet again, caused by the common housefly.

Escherichia coli

Escherichia infection starts mild, with a tender stomach, body pains, mild fever, and loose stools. These symptoms rapidly develop into a severe form, leading to bloody stools, stomach cramps, and overwhelming fatigue.

This is especially common if you happen to live near a cattle farm and your house has a fly infestation.


Salmonella is a type of bacteria related to typhoid fever causing bacteria. Salmonellosis is a gastrointestinal disease, causing symptoms like perforation of the intestines, bleeding — and in untreated cases, death.

This disease is in close association with people that have a house fly infestation near a poultry farm.


A serious and rare bacterial disease is caused by contact with an infected organism or inhaling bacteria spores. Unlike the previous diseases, the infection is characterized by respiratory symptoms like breathlessness, wheezing, scabs, and rashes. Despite the infection typically being that of animals, the common housefly infects humans.


This respiratory infection is caused by the bacteria mycobacterium tuberculosis. Symptoms include severe cough sometimes with blood, weight loss, chest pain, difficulty breathing, night sweats, swollen lymph nodes, and overall failure to thrive.


Control and prevention

If you struggle with a housefly infestation, get your entire household cleaned professionally. Hire professionals who have an in-depth knowledge of the pest, its lifecycle, the key areas it may thrive in, whilst also meeting your requirements and expectations. It also doesn’t have to be an expensive affair. Find out here how much it may cost you to get your house thoroughly deep cleaned.

Other methods of prevention include:

  • Ensure proper waste disposal.
  • Do not leave your food and water uncovered.
  • Ensure the windows and door have a secondary net for protection during monsoons.
  • Keep a fly swatter, and alcohol rub handy to kill any flies you may encounter and promptly spray the area with alcohol or disinfectant spray.
  • Do not leave puddles of water or even your swimming pools open for days together, unattended.



In conclusion, the common housefly isn’t just an annoyance, but also a very big threat to the health of you and your family members.

Ensure to keep a close eye on your food and water. Double-check your toilets are not leaky, and the garbage disposal is done properly.

If you are troubled with an infestation, it’s time to reach out to professionals. Contact the Bug Guy Pest Control services today!