As the UK experiences a heatwave with a red warning from the Met Office, households are seeking ways to keep flies out. Mrs Hinch fans have shared a simple trick using 1p and 2p coins that costs just a penny.
The 1p Coin Method
A post that has garnered thousands of comments advises filling a clear sandwich bag with water and copper coins, then placing it in front of a door or window. The cleaning enthusiast who shared the tip assured it “stopped them from coming in.” Another group member added: “Not sure why it works but it does reduce them.” Some fans also suggested hanging 1p and 2p coins directly in front of windows.
Why It Works
According to popular science, flies are deterred for two reasons. They dislike water and are put off by the colours reflected by copper coins. Flies have compound eyes, so the bag of water and coins appears as a large body of water, which they avoid crossing.
Other Tips
Mrs Hinch fans also recommend citronella candles, incense, cloves in half a lemon, and placing herbs like basil and lavender near open doors and windows to repel flies.
