Cheap ways to keep flies away: what works and what doesn't
From the water bag myth to the 2026 electric fly traps: what actually repels flies without spending money. Real tests.
English · Original discussion in Spanish · Published
How to keep flies away on a budget: from the water bag to the electric trap
The housefly is the unwanted companion of every summer. It slips in through the window, lands on the fruit, buzzes around the bin. Then begins the search for remedies: vinegar, water bags hung up, aromatic plants... Most of them, according to accumulated experience, are myths.
The false myth of the water bag
The trick of hanging a plastic bag filled with water in doorways and windows has been repeated for decades. It dates back to the meat markets of the 19th century, when animal bladders were used. But numerous field tests debunk it: it does not repel flies. The most effective method remains keeping rubbish and sources of attraction away.
Cheap remedies that actually work
Vinegar is a classic, though its effectiveness is limited. Some swear by a fan with a scented bait behind it, which attracts flies and shreds them; the drawback is having to clean the appliance afterwards. Others rely on a hunting cat, but not every feline delivers.
The modern solution: electric fly traps
In 2026, electric devices have hit the market that use ultraviolet light and a silent fan to attract and catch insects without chemicals. Mercadona sells a plug-in model with refills that last a month, ideal for placing near windows. There are also traps shaped like a fake dragonfly as a deterrent, though their effectiveness is doubtful.
The surprising fact: despite the technology, the best defence is still cleanliness. But in the middle of a heatwave, with the rubbish piling up, any help is welcome.
The housefly is the unwanted companion of every summer. It slips in through the window, lands on the fruit, buzzes around the bin. Then begins the search for remedies: vinegar, water bags hung up, aromatic plants... Most of them, according to accumulated experience, are myths.
The false myth of the water bag
The trick of hanging a plastic bag filled with water in doorways and windows has been repeated for decades. It dates back to the meat markets of the 19th century, when animal bladders were used. But numerous field tests debunk it: it does not repel flies. The most effective method remains keeping rubbish and sources of attraction away.
Cheap remedies that actually work
Vinegar is a classic, though its effectiveness is limited. Some swear by a fan with a scented bait behind it, which attracts flies and shreds them; the drawback is having to clean the appliance afterwards. Others rely on a hunting cat, but not every feline delivers.
The modern solution: electric fly traps
In 2026, electric devices have hit the market that use ultraviolet light and a silent fan to attract and catch insects without chemicals. Mercadona sells a plug-in model with refills that last a month, ideal for placing near windows. There are also traps shaped like a fake dragonfly as a deterrent, though their effectiveness is doubtful.
The surprising fact: despite the technology, the best defence is still cleanliness. But in the middle of a heatwave, with the rubbish piling up, any help is welcome.
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Summary of a discussion on Burbuja.info - Foro de economía, actualidad y política., translated from Spanish and reviewed before publication. Read the full discussion (29 replies).
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