Summer is nearly here, and along with the sunshine and heat it also brings with it droves of flies - some of the most annoying and harmful of insects. They lay eggs in food and spoil it as well as spreading disease. And don't forget they're annoying!
If you have a fly problem at home or even on a nature walk, here is what you do:
1. You'll need: plastic bags, water and a few coins (The money won't buy you a fly repellent, but will help you build one).
2. Fill the bag with water.
3. Place 4-6 coins in every bag.
4. Tie off the bag and hang it in an infested area.
Sounds like hocus pocus? Well, there is actually a fascinating scientific explanation for this method.
The millions of molecules in the water create a special prism effect, meaning they break the light in a very special way. When you add the coins, a cumulating effect of light being broken is randomly enhanced.
Flies have a very special way of seeing. Their eyes are made of thousands of identical lenses, meaning they see thousands of reflections of the same image.
For a fly, that simple bag of water looks like lots of disco balls reflecting light and movement in a way that causes them to be dizzy. Under such conditions, they end up being distracted all the time and feeling vulnerable to predators.
Flies serve as food for a number of other animals, and flies who feel vulnerable won't stick around, because it feels too dangerous.
Not only does this method work, it is also low-cost and harmless, unlike chemicals that can poison our food, air and water. It's ironic how sometimes the best solutions are also the simplest ones!
Get free access To all the posts in our new app!