What Do Flies Do When They Land On Your Meals


All of us have probably experienced a fly landing on our food. Most of us don’t throw that tasty food away but disregard the fly and continue eating. However, it’s the wrong thing to do since flies can bring tons of problems to our health.

The last thing that the flies landed on will be the contaminant to your food. Aside from the last contaminant, these tiny insects can cause a lot of problems for their size. What exactly happens when flies land on your food?

  1. Flies can vomit on the meal

Flies usually eat through their tubular mouths by sucking fluids. They have to turn the meal into a liquid because of their mouth. To transform the food into a liquid, flies puke on the food with their saliva which contains what they ate before.

  1. They can lay eggs

If you leave some leftover food for later, flies can take the opportunities and nest their eggs. After a while, these eggs will transform into baby houseflies (larvae or maggots) that can be poisonous.

  1. They can transfer bacteria on your food using their wings or legs

Even though the flies are filled with bacteria on the inside, it’s the outside that contains the most microbes. They leave out a microbial colony of tracks wherever they land.

  1. They carry 65 different diseases

There are at least 65 transmittable diseases that the flies carry with them by just crawling through the garbage. These diseases include cholera, diarrhea, dysentery, and leprosy. Aside from humans, flies can also infect other animals like pigs and chickens as well.

Repelling Flies

Typically, flies hatch outside and then make their way inside your home either through structural weak spots or open windows/doors. After entering the home, they can lay up to 75-150 eggs at a time. These eggs are the size of a pea so it’s hard to identify them.

After the eggs hatch, the flies are known to move up to 20 miles but typically stay one mile from their birthplace.

The best way to prevent flies is through vigilant sanitation. This includes removing trash daily, clean surfaces on counters, properly closing and screening windows and screens, disposing of decaying food properly. There are also many insect repellants that can help but make sure you go the natural way instead of using toxic chemicals.


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