The hot summer weather provides ideal conditions for insects to thrive, especially flies. With their rapid reproduction rate, flies can cause significant nuisance to humans. More importantly, they can carry and transmit dangerous diseases, posing a serious health risk. Flies are extremely difficult to eradicate due to their rapid proliferation. They often contaminate our food by landing on it and laying eggs, which is highly unsanitary.
One simple and effective tip to repel flies is to hang a water bag at your doorstep.
Why does hanging a water bag at the entrance repel flies?
First, you’ll need a transparent plastic bag, preferably made of thicker plastic to prevent leakage. Fill the bag with clean water and securely tie it shut. If you have metal coins, you can add them to the bag as well.
Hang these water bags near windows and doors to keep flies at bay.
This simple trick will deter flies from entering your home, but why are they afraid of water bags?
The effectiveness of hanging water bags to repel flies is based on scientific principles. Flies have compound eyes with a unique structure, allowing them to perceive their surroundings in a very wide arc. They can observe multiple directions simultaneously, which is why they quickly dodge when we try to swat them.
When a plastic bag filled with water is hung at the entrance, it creates a giant reflective surface that startles the flies. Adding coins enhances the refractive effect, further intimidating the flies and deterring them from approaching.

Additional Fly Repellent Tips
Besides using water bags, there are several other effective methods to repel flies.
- Use garlic as a natural fly repellent
Garlic, a common cooking ingredient, has a strong pungent odor that repels a wide range of insects, including flies. Peel and mince garlic cloves to release their scent, and place them near fly-infested areas such as windows, doors, and the kitchen. Flies will be deterred by the powerful aroma of garlic.
- Use ginger as an alternative repellent
If you find the smell of garlic too overpowering, ginger is a great alternative. Mince ginger and place it in areas where flies congregate. The sharp, spicy aroma of ginger will help keep flies at bay.
- Vinegar: An Effective Fly Repellent
Dilute vinegar with clean water and use this solution to mop your floors. Not only does vinegar enhance cleaning efficacy, but its scent also acts as a natural fly repellent. The smell of vinegar will drive flies away, and since the vinegar is diluted, it won’t be overpowering for humans.
- Citrus Power: Dried Orange and Tangerine Peels
Dry orange and tangerine peels, and then burn them to release a pleasant aroma. While the scent of these citrus fruits is appealing to humans, it’s a natural repellent for insects, including flies.
By employing these simple fly repellent methods, you can effectively banish these pesky insects from your home. Depending on your preference, you can opt for the water bag trick, utilize odoriferous substances like garlic, ginger, vinegar, or citrus peels, or combine these methods for maximum fly-repelling power.