Eli5 How do fruit flies appear even when there’s no fruit?

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Every now and then I’ll be having a glass of wine and one single fruit fly will show up and be gone by the next day. I have no fruit in my house. There’s a few vegetables in the fridge. Everything’s clean and there are none in the trash. I’m so confused. It’s happened a few times.

I know fruit flies appearing has been asked 1000 times but I’ve gone through them and can’t find a question without fruit.

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8 Answers

Anonymous 0 Comments

Contrary to their name, fruit flies will infest any rotting material (not just fruit). They’ll find any source of moisture or decaying material, including sponges, mops, or even puddles of water. This type of material is where adult fruit flies lay eggs. Kitchen sink drains commonly foster fruit fly infestations.

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