Causes of Flour Weevils & How to Prevent Them

15 March 2025

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Have you ever found wheat flour with weevils and even a musty smell? It must be annoying, especially if you have used it often and just realized it now. In this situation, you may wonder how can this happen? and can weevils in wheat flour be dangerous to health? Find the answers in this article!

Also read: Causes of Musty Smelling Wheat Flour

Causes of Flour Easily Being Infested with Weevils

Wheat weevils are very small, sometimes even hard to see with the naked eye. Because of their small size, they can get into the flour and lay eggs without us realizing it. In fact, most of these weevils will already be breeding inside the wheat kernels that are being ground into flour.

In other words, the bugs could already be in the flour before it was packaged. That is why it is important to choose wheat flour from a trusted producer, who prioritizes the quality of raw materials, such as PT. Manunggal Perkasa. In our factory, every wheat flour is treated carefully and according to standards to prevent contamination from the start.

Next, another cause of weevils in wheat flour is improper storage, such as leaving it open or using a loose container. This will allow weevils to enter and lay eggs.

In addition, flour that is placed in a humid and warm place is also very susceptible to fleas. This is because fleas like this kind of environment and allow them to breed quickly.

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Is Flour Infested with Weevils Dangerous for Health?

You may be wondering, is it safe to consume flour that has been infected with weevils? Fortunately, wheat weevils and flour weevils are not harmful to human health. They do not bite, sting or are poisonous, so you don’t have to worry about accidentally consuming them.

However, there are a few things to keep in mind. If the weevils have developed in large numbers, the flour can smell musty and its quality will decrease. This can affect the final result of the dish.

In addition, flour bugs can spread fungal spores that can cause mold. If you consume contaminated flour, you may experience allergies or skin irritation. In rare cases, a person may experience throat swelling and difficulty breathing. In this situation, contact a doctor immediately for medical attention!

So, flour that has been infected with lice or other insects should not be used for cooking. This is to avoid possible cross-contamination and to maintain kitchen hygiene.

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How to Prevent Flour from Being Infested with Weevils

To prevent your wheat flour from being contaminated by weevils, there are several simple steps you can take:

  • Store flour in a tightly closed container, such as airtight plastic or glass, to prevent weevils from entering.
  • Try not to store flour in damp places or exposed to direct sunlight.
  • Always use the old flour first
  • Before using flour, check for signs of fleas such as small insects, larvae, or small lumps in the flour. These can be signs of a flea infestation.
  • Clean your flour storage area and pantry regularly with soap and warm water. Pay attention to hard-to-reach corners, as these can be nests for fleas.

Also read: Guide to Storing Wheat Flour Correctly

By implementing the methods above, you can prevent wheat flour from being infested with weevils and maintain the quality of the ingredients you use for cooking or baking. Don’t forget to always use good quality wheat flour, such as products from PT. Manunggal Perkasa, to ensure your cooking results are as expected!

(ast/qlb)