How to Keep Pesky Flies Away From Your BBQ

How to Keep Pesky Flies Away From Your BBQ

Flies have visual receptors called ommatidia. Unlike humans, they don't have pupils that controls the amount of light that enters their eyes. Our pupils do, their ommatidium do not. Therefore, the reflective light or flickering light “scares” them because they can't focus. Another homemade repellent is the use of an …

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