Surge in Flies Amid Heatwave and Wasp Decline
"Open the Door, and Swarms of Flies"
Residents Struggle with Infestation

Residents across the United Kingdom are experiencing severe inconvenience as a surge in flies caused by extreme heatwaves has swept the country.


The photo is not related to the specific content of the article. Pixabay

The photo is not related to the specific content of the article. Pixabay

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According to international media outlets such as The Guardian and The Telegraph on August 3 (local time), the number of flies in the UK has significantly increased due to heatwaves that have persisted since June. Experts attribute this rise to two main factors: higher temperatures have accelerated the breeding cycle of flies, and the population of wasps, the flies’ primary predators, has declined.


As cold-blooded creatures, flies tend to seek shady places to avoid the heat. As a result, there has been a series of cases where swarms of flies rush into homes as soon as windows or doors are opened. The situation has become so severe in the UK that some are calling it a “plague of flies.”


A resident in northern England has filed a petition with the Environment Agency and the local council, calling for an investigation into the causes of the fly outbreak. It was reported that around 1,000 residents have signed the petition.


Residents lamented, “We are catching more than 40 flies a day just in the kitchen. It feels like an endless war.” Another resident said, “Just having flies around makes the house feel dirty,” adding that they had spent hundreds of pounds installing insect screens.


Adam Jooson, CEO of the pest control company Merlin Environmental, stated, “The tropical climate that continues in the United Kingdom has sped up the breeding of flies,” and noted, “With the sharp decline in wasps that prey on flies, the fly population has increased dramatically.”



Experts identified the decline in wasps in the UK as being caused by persistent rain and frost during the spring. They explained that bad weather led to the deaths of queen wasps and damaged nests. In addition, the heatwaves dried up flowers, leading to a shortage of food for adult wasps.


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