Why fruit flies are harmful to humans
Fruit flies cause disease-
Fruit Flies are not only attracted to sweet fruits and rotting vegetables, but they like to sit on every edible thing like soda bottles, trash bags, or spilt juices. Also, they are found in all kinds of unhygienic places. Because they have already visited many unsanitary places before making contact with your food, they are more likely to spread diseases. Their body hair can easily carry the disease bacteria and infect your surroundings.
Your garden can be devastated-
Everyone likes to own a garden to grow beautiful flowers and healthy vegetables. But, homes with gardens are more vulnerable to the attack of fruit flies. They can destroy your garden and you might not be able to grow them again. Not only this, but they also ruin your food by leaving behind their eggs in it. And this situation can be worse if you are a horticulturist or commercial producer. It is impossible to cope up with the pest-infested harvest.
They can ruin outdoor parties-
If you are having an outdoor party and you see a swarm of fruit flies it might become a chaotic situation. And if a fruit fly is successful to land on your food, you would have to throw your entire food because it is now infested with the diseases they carry. Flies may even lay eggs on your food which can lead to serious health issues.