Have you ever tried using pennies in a plastic bag to keep the flies away?
If you have, you are not alone.
But how could this seemingly simple method be effective at all?
“Some have said it magnifies the pennies resembling another insect’s eyes, scaring the fly away, while others say the clear liquid looks like the surface of a body of water, which the flies perceive as a place they don’t want to land,” writes the Tennessee Farm Bureau website.
Along those same lines, the site explains, the copper reflecting through the light may cause a flies intricate eyes to become confused.
” The fly bases his movement by light,” the Tenessee Farm Bureau site explains, “and the refracted light coming through the water in the plastic bag confuses the fly causing him to move on to a place that is easier on the eye.”
While the evidence remains slightly dubious, you will never know if pennies in a bag repel flies until you give it a try!