The Dangerous House Fly, Dengarden

The Dangerous House Fly

The house fly and its dangers

We all look forward to the coming of beautiful summer. However, with the bright sunshine comes dangers as well. One of the most common insects on the planet is the house fly — musca domestica and it can carry over 100 pathogens dangerous to humans.

Our food is one of the main targets likely to become contaminated so lets now have a look at how the house fly spreads germs.

The life of the house fly

The house fly is around 7mm in length but sizes do vary. They have large eyes that are usually a red shade and a bristled body. A fly cannot bite. Instead it’s mouth consists of a spongy pad shape. This is used for releasing saliva and digestive juices that turns its’ food into liquid form. The spongy area of it’s mouth then soaks up this liquid.

Depending on the size of the fly a female can lay up to 500 eggs over a period of 3 to 4 days. Within a few hours — normally between 8 and 20 hours — of the female laying her eggs the maggots emerge. They eat anything and prefer a warm moist environment. The maggots continue to develop and grow for the next 4 to 10 days and then move onto the next stage of their growth. This next development is the pupa stage. The maggot remains as a pupa, wrapped up in a skin, for up to 10 ten days before finally emerging as an adult fly. Their life span is around 15 to 30 days and the female can begin to reproduce by the second day of her life. The female fly is larger than the male.

They can travel up to six miles within a 24 hour period although most of them tend to stay around their breeding areas.

Now that we know how they live and breed, let’s look at how they introduce germs into our homes.

Did you know?

  • Flies feel, taste and smell with the hairs that cover their body. In particular the hairs that are around its mouth and on its feet are both used for tasting food. So basically a fly can taste what it walks on. If they have found a potential food source, they put the food in their mouth to taste it again.
  • Flies also have sticky pads on the bottom of their feet that allows them to walk upside down on smooth surfaces like glass with ease.
  • Despite the fact that flies do carry numerous germs they are also essential for the whole ecosystem. They are important, along with some other insects, in converting waste products such as rotten vegetation and faeces into soil. They also help to pollinate some plants.

How house flies infect our homes

House flies are no doubt one of the biggest pests of the summer and carry the most germs. Part of the problem is the way they live.

Flies walk among rotten food and other rubbish, faeces, decaying animals and then fly straight into your home and onto your food. We’ve already mentioned how they liquefy food and then eat it. However, the main way that they contaminate our food is when they rub their legs together.

Despite our feelings that the house fly is a dirty animal, it actually spends a good part of its day cleaning itself. If its body, eyes and antennae become clogged with dirt, then the fly’s ability to use these areas to find its way around is severely compromised. It uses its legs to clean dirt from every area of its body and then rubs its legs so that the dirt falls off. Unfortunately if the fly happens to be on your kitchen surface or food, then the dirt shaken off will land there.

So what kind of bacteria can a house fly potentially carry? There are many to chose from — some studies show up to 200 — but a few of the most common are:

  • Shigellosis — Bacillary dysentery and other diseases causing diarrhoea
  • Salmonellosis — food poisoning, typhoid, paratyphoid and enteritis. Although flies are capable of carrying these diseases, it is much less common that the shigellosis diseases.
  • Bacteria causing conjunctivitis — this mainly occurs in areas such as Asia and Africa and the Pacific regions
  • E.coli (Escherichia coli)
  • Poliomyelitis — house flies do have the ability to transmit this virus — and other similar viruses — but normally only people who are perhaps already ill would be the most vulnerable.
  • Parasitic worms — especially tapeworms.

These are just a few of the many bacteria and viruses that house flies can potentially transmit. However, although this looks like an alarming list of bugs and diseases, flies don’t always carry these pathogens along with them. In addition, most of us have good immune systems that block the majority of dangerous bacteria and viruses.


In most cases, simple precautions and hygiene in and around the home will keep people safe for the majority of the time.

House Fly Survey

Do you get concerned about house flies around your home?

Keeping your house safe

For the most part I’ve looked at natural remedies to deal with house flies rather than using toxic sprays — they usually smell revolting and many that I’ve tried come shooting out in blobs that go over the windows and kitchen surfaces. Needless to say, don’t spray fly repellent where food is lying and watch pets, it can be quite irritating to them. However, if you have a big fly problem use it until you can get other measures in place.

Basic Hygiene Ideas

Basic house hygiene is the first step when dealing with house flies. The main points to remember are:

  • Don’t leave dirty plates with leftovers lying around, they’re like beacons to house flies.
  • Wipe off crumbs and spills from kitchen surfaces as soon as possible.
  • Change washing cloths regularly — tiny particles of food left on a cloth will be an attraction to flies.
  • Empty waste bins frequently and don’t leave them overflowing, this is a huge attraction to flies.
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In addition, there are a number of natural remedies that helps to keep the number of house flies down. Using natural oils such as:

Flies are not keen at all on any of these oils and its probably the scent that puts them off. Many people use some of these oils diluted in water and wipe down their kitchen surfaces. You can also try burning a little oil. You get a lovely smell in your kitchen and it keeps flies away. Alternatively pour some of the oil onto a cloth and leave the it sitting. You will need to use fresh oil frequently however, as the smell gets weaker when exposed to fresh air.

Keep food covered and ensure to wash any fruit or vegetables that have been sitting out for a time. Using clean kitchen towels or netting to cover food if you have to leave it out for any length of time prevents flies from getting to the food.

In addition, ensure that you don’t inadvertently attract flies by leaving outside garbage buckets open or the lids not put on properly — garbage is one of the biggest lures to a fly. Ensure that your garbage is uplifted regularly.

If you have pets ensure that you lift their waste up if they are taught to use your garden. As mentioned previously, flies are very attracted to any kind of faeces.

Plants

Having plants just outside your door or windows are great for stopping flies entering.

  • Basil is a favourite with many people and they have pots of this herb just outside their door where flies tend to enter the most. There are many varieties of basil but any kind can be used to repel insects. People also take a leaf and rub it over their skin to prevent being bitten by insects.
  • Lavender is another excellent fly and other insects repellent. You can have pots of lavender outside or have it hanging inside in areas where flies love to visit.
  • Tansy is a beautiful little plant that not only repels flies but many other kinds of insects such as fleas, ants and moths. It’s also believed to be a deterrent against mice.

You don’t have to use these herbs as pot plants, many people make salves and also repellents out of the herbs to use as home made anti-fly spray.

Insect netting and screens

These come in various sizes and range from very cheap to expensive. If you want a permanent insect screen for doors and windows then it’s best to buy as good a quality as you can afford. Personally and because living in Scotland, flies are only a nuisance for a few months at most, I use temporary insect netting for the windows. This only costs a few pounds/dollars and you put them up in a few minutes. When the fly season is over you take them down. Some brands you are able to wash and keep for the following year or you can just throw them in the rubbish.

At the other end of the scale you can have permanent insect screen blinds fitted. Most are of the roller blind type so you don’t have to have it down all the time. Some types are also very pretty and have a lace effect so that it doesn’t actually look like an insect screen at all.

Water

I haven’t personally used this method so I can’t verify if it works. However, after talking to some folks on a few forums they swear by one particular method. Apparently filling a plastic bag with water and hanging it outside your doorway is an excellent fly repellent. There are a couple of theories why it might work. Firstly, the reflection created by the water could be confusing the fly and it moves off. Additionally the reflection might look similar to a spiders web to the fly’s eye and obviously the fly wants to avoid spiders at all costs.

Fly Papers

I have to admit that although these sticky papers do seem to work I really do dislike them. The sight of dead flies hanging about my home just puts me right off. However, if your not as fussy as me then fly papers do work and they are cheap. However they are only really useful when used indoors and don’t work all that well around a barbecue area for example.

Fly Zappers

These are one of the most popular methods of getting rid of flies, especially in commercial areas. They also work well in the home. Basically the flies and other insects are attracted to the light — usually ultraviolet light is used but some models have neon or mercury lighting. When they enter the zapper they are killed immediately by a charge of electricity. These fly controls can be rigged up for using outside the home for example at barbecue areas.

However, you should be aware that these bug zappers don’t work against mosquitoes. In addition, they are a controversial device mainly because it’s not just flies that it kills — harmless insects are caught as well. The problem is that because these zappers can kill huge amounts of insects in one night there are concerns about the ecosystems being affected. Whether you like insects or not, they are essential to the health of the planet.

One last word about bug zappers. I once had the misfortune to see inside one of these zappers that was being cleaned in the place where I worked. To put it mildly it was revolting! The thought of having to clean out hundreds of dead insects put me off completely! I prefer to stick to my lavender plants and oil.

Spiders

Unless you have spiders who give serious/venomous bites then let them stay around if you’re not too scared of them and provided you don’t have too many. They are very effective at keeping flies and other insects under control. Personally, I don’t mind the spiders hanging around in the summer in the hallway or just outside the kitchen, but no way do I allow them to stay in my bedroom!

Other methods

To finish off the hub I’ll just quickly mention some research that is currently underway to try remove the numbers of flies we have around. For example scientists at the Agricultural Research Services — (Centre for Medical, Agricultural and Veterinary Entomology) Florida — are looking at how adult flies could be injected with a virus that will stop them reproducing. The virus — SGHV or salivary gland hypertrophy virus — will stop female flies producing eggs and male flies from wanting to mate.

Sure, flies are a pest and they do have the potential to carry some dangerous germs. However, they also have a crucial part to play in the ecosystem — both in reducing waste matter and helping to turn it into soil. They are also essential prey for other animals such as spiders. What would be the result of a sudden loss of thousands of flies in the ecosystem due to some human induced virus? Surely, unless there is an unprecedented plague of flies, using the insect repellent methods we have are enough to keep them under control? Do we really need to go to the extreme of screwing around with nature and her carefully balanced ecosystems?

Let me know what you think and I’d also love to hear about your own remedies for keeping insects at bay around your home.

This article is accurate and true to the best of the author’s knowledge. Content is for informational or entertainment purposes only and does not substitute for personal counsel or professional advice in business, financial, legal, or technical matters.

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Comments

frogyfish

4 years ago from Central United States of America

Interesting and informative hub on these beautifully ugly creatures. The macro video was vivid! However, I do think there are some flies that bite -must have a different specie? I did not know basil was a repellent, but do use other essential oils — especially the lavender and lemon. We did use your electric zapper for a short while — and yes, got every kind of bug except the mosquitoes we were after. I don’t probably agree that the fly-virus is a good idea either — we definitely need all the pollinators we have, as so many bees are being killed with chemicals. Your informative hub was a great read, so thank you!

Helen Murphy Howell

6 years ago from Fife, Scotland

LOL! Yes they are nasty little blighters. I do love nature and of course animals, but have to admit to having a hard time with flies and slugs — Yuck!!

Mackenzie Sage Wright

Ewww. I always hated flies in the house but now I’m going to be just grossed out. That is nasty!

Helen Murphy Howell

6 years ago from Fife, Scotland

Hi Jo_Goldsmith 11,

Many thanks for stopping by and glad you enjoyed the hub.

I’m the same, I can’t stand flies or wasps — bees I don’t have a problem with. My dogs are going nuts at the moment trying to catch any flies that do come into the house, so I’ve got the insect netting up, especially for nighttime, there’s nothing worse than trying to sleep with some daft moth or crane fly buzzing about your head!!

I’m not sure, but I would think that if it is ‘lemon scented’ then it would have some of the extract from a lemon distilled into it and I would imagine it would work just the same.

Many thanks for the vote and the tweet!!

Jo_Goldsmith11

This is a great article and advice. I don’t like houseflies and our cats are not doing their jobs lately in trying to catch them. We will be installing a screen door soon. 🙂 I can keep our front door opened and let the air in and keep the flies out! I didn’t know about wiping down the counter tops with lemon. I use Mr. Clean lemon scented. Is this the same thing?

Voted this Up +++, shared & tweeted. thanks again. 🙂

Helen Murphy Howell

6 years ago from Fife, Scotland

Hi mikkar — many thanks for stopping by and for leaving a very interesting comment. Yes, I think the powers that be always have a reason for creating everything even if we don’t always understand it. Now, I didn’t know about hungry cats eating house flies, my dogs certainly chase them! LOL!

Michael

6 years ago from Nairobi

Sometimes you wonder why God created some things, but when you understand how ecosystem work you apprecite them. A hungry cat also eats houseflies

Helen Murphy Howell

6 years ago from Fife, Scotland

Hi Rasam, I know flies do have their place in nature, but like you I can’t stand them. Especially when they target your food. Also when out with the dogs, I hate the way the can really harass them! I had a fly swatter once but I missed most of the time so gave it up!!

Helen Murphy Howell

6 years ago from Fife, Scotland

Hi sparkster — lol! yes, yuck indeed! They are all part of nature to be sure but why do so many of them have suck crappy habits!!

Helen Murphy Howell

6 years ago from Fife, Scotland

Hi ChitrangadaSharan, lovely to hear from you as always and I’m glad that flies are not a problem for you and I agree, even one fly is very irritating!

Helen Murphy Howell

6 years ago from Fife, Scotland

Hi Om Paramapoonya, many thanks for stopping by and glad that you will give the oils a try. I certainly find that lavender works well where I live but there are many to chose from — good luck!

Gypsy Rose Lee

7 years ago from Daytona Beach, Florida

Thanks for this informative and useful hub. I sure hate flies. They are a pain. We keep up plenty of fly papers and have swatters about because where we live we have a very old house and no air conditioning. So summer means open doors and open windows. Passing this on.

Marc Hubs

7 years ago from United Kingdom

Oh how beautiful God’s creatures are haha! Very informative hub. but yuck!

Chitrangada Sharan

7 years ago from New Delhi, India

Very useful and informative hub!

I don’t have much problem of flies within my home as such, but I do take care that they don’t enter my home, simply by avoiding sweet food here and there and keeping general cleanliness. Even one fly is very irritating. Thanks for this helpful hub!

Om Paramapoonya

Thanks for your helpful advice. I do have a fly issue every summer here. I like the idea of using natural oils. It can repel flies and make the house smell nice at the same time. I’ll definitely give this trick a try.

Helen Murphy Howell

7 years ago from Fife, Scotland

LOL! Hi Frank, I know, not the most positive way to start the summer — not that Scotland has that great summers at the moment, but we might get a surprise this year! But yes, the spiders do help and I have netting and lots of lavender hanging around inside and out and it tends to keep the little ——— away for most of the time!

Frank Atanacio

7 years ago from Shelton

House flies are nasty.. I get a lot of spiders because of the flies .. because I live near the woods and the flies are attracted to the rotting wild-life.. I have taken measures to keep them outdoors.. but spiders do help.. thanks for reminding us of the nasty side of summer LOL

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What are the dangers of having houseflies in your house ?

Wiki User
April 21, 2010 5:50PM

For one house flies are the most dangerous of all animals

because they land on animal wastes and other harmful materials. I

suggest that you get rid of them.

House flies are NOT the ,most dangerous of all animals.

Mosquitos are are the most dangerous as they carry malaria and that

kills thousands of people every year! There are no dangers to

houseflies, they just seem dirty to us, they land on our food, they

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eat our excrement , they can go in your mouth, they are very very

irritating and there are too many of them.

I’d check out the reason WHY you have house flies in your house

as that would be more of a problem( if there is a lot of them) ie

do you have a dead animal stuck in a chimney, or is there a lot of

rubbish near your house etc!

The first poster is correct and has every right to be concerned.

Flies land on dog/cat waste, vomit of other animals, eat garbage

and every single time they land on YOUR food or on YOUR counter

where your food may be they excrete. This is GERMS! There is no

problem with flies in a house and that’s what a fly swatter is used

for and I use it. Sometimes people during the warmer months are in

and out of the house, may have a window open and that’s how the

flies get in. I just say to my cat Molly ‘Get that thing!’ She is

faster than the speed of light and swats it enough to stun it and I

swat it with my fly swatter and throw it out in the garbage.

Flies actually do save peoples lives believe it or not. Often

when people have gone down the side of a cliff either by auto or

hiking and have wounds the flies will leave eggs which turn into

maggots which eats the dead skin and it has often saved a person’s

leg or arm or a wound that could get much more infected. As I have

always said each creature has it’s use. Still, if in your house

flies can carry many germs that you don’t want on your food or your

I’ve read that there is so much air flow over their feet when

they fly that they are virtually free of harmful bacteria after

just 20 feet of flying.Although they might be pesky at times,

they’re living jewels who play an important and useful role by

recycling waste, pollinating plants, and as a food source for

birds, amphibians, reptiles, other arthropods, and small

www.answers.com

10 Deadliest Diseases Caused by Mosquitoes

We never like mosquitoes and don’t want to see them around any time during the day. It is true that mosquitoes are amongst the most dangerous creatures in this world. They become the reason of a lot of diseases; Some of them are minor while others are life-killing. The U.S. Center for Disease Control has reported that every year more than 1.5 million people around the globe lose their lives due to mosquito-borne diseases. Let us take a look at the 10 deadliest diseases caused by mosquitoes.

1. Dengue Fever

Dengue fever is, no doubt, one of the most dangerous and deadliest diseases caused by mosquitoes. It is common among the people living in tropical and subtropical climates. Aedes mosquito is responsible for this disease. Dengue mosquitoes multiply in the cells of our body, causing high fever, headache, joints pain and rashes as the initial disease symptoms. The doctors recommend acetaminophen; however, no certain medications and treatments are so far available for this disease.

2. West Nile Virus

West Nile Virus is caused by Culex mosquitoes. This disease is common in animals and birds but reports reveal that this virus is found in the human cells as well. It spreads through saliva and breast-feeding from mother to the children. The virus of this disease affects the blood circulation of the human body and damages the brain tissues as well. In some severe cases, the disease can lead the victims to convulsions, coma and even death.

3. Malaria

Malaria is caused by Plasmodium falciparum or Plasmodium vivax. Female Anopheles mosquitoes bite the human beings and transmit any of these viruses into the blood stream. This migrates to the liver and ruins its proper functioning. The malarial parasites keep on multiplying within the body until the symptoms like fever, chills, sweating, headaches and severe-flu start appearing. The most common and highly recommendable anti-malarial drug is made of quinine.

4. Yellow Fever

Yellow fever is a common disease in Africa and South America. It is caused by Aedes mosquitoes especially Aedes aegypti. This virus keeps in incubation condition within the body for four to seven days until the infected person starts showing symptoms like severe headache, nausea and severe fever. So far, no special treatment has been discovered / invented for curing the patients with yellow fever. A few vaccinations, however, have been developed to cure the patients but their effect doesn’t last for long. As soon as the vaccine is stopped, the disease re-originates, this is why the medical professionals highly recommend to go with certain preventive measures like taking care of hygienic food and healthy environment.

5. Rift Valley Fever (RVF)

Rift Valley fever is common in the individuals who live with domesticated animals like cattle, buffaloes, sheep, cow and goats. This disease is caused by RVF virus of genus Phlebovirus and family Bunyaviridae. Various reports from 1910 to 2000 reveal that RVF outbreak has had been serious in different parts of the world especially the nations like West Africa, Saudi Arab and parts of Asia.

6. Murray Valley Encephalitis

Murray Valley encephalitis is another deadly disease caused by mosquito. Although this disease’s victims are rarely found but wherever its viruses are present, are the reason of brain tissues’ damage. Australia has the highest rate of Murray Valley encephalitis victims. The victims of this disease don’t show prominent symptoms, but usually headache, neck stiffness, seizure and drowsiness like problems start originating into them. If such symptoms are observed, the patients should be immediately brought to the nearby hospital.

7. Chikungunya

Chikungunya is another deadly disease caused by Aedes mosquitoes especially Aedes aegypti and Aedes albopictus. The most common symptoms of this disease include joint pain, headache, vomiting, back pain and skin rashes. The disease is manageable if proper medications are prescribed. Some of the pain relieves of Chikungunya include ibuprofen, naproxen and paracetamol.

8. Japanese Encephalitis

Japanese encephalitis is a serious infectious disease of the brain. This is caused by the biting of mosquitoes. Japanese encephalitis is a common disease of Asia, New Guinea and north Queensland. Some of the severe symptoms of this disease include high temperature, convulsion, coma and severe headache. The doctors usually cure the patients of this disease with vaccination.

9. Dog Heartworm (Dirofilaria immitis)

Dog heartworm (Dirofilaria immitis) is one of the most serious life-threatening diseases caused by roundworms and mosquitoes. The bite of the mosquitoes containing the larvae of this roundworm is the actual reason of this disease’s spread. You should avoid keeping pets like dogs, cats and parrots at home because such mosquitoes depend upon animals for obtaining their food. This disease is common in USA and Canada.

10. Western Equine Encephalitis (WEE)

Western Equine Encephalitis (WEE) was first discovered in 1930 in Canada and Mexico. This disease is caused by Culex tarsalis. Vaccine is now available to cure the patients of this disease. More than one thousand cases every year are reported about deaths caused by WEE. This disease is common in human beings and horses.

www.wonderslist.com

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