Sandwich Bag Flies?

Mrs Hinch fans' simple coin trick helps banish flies from your home in hot weather - Mirror Online

Why putting coins inside a zip lock bag filled with water is the ultimate hack

Bag your apples to keep maggots and codling moths away

Hang Pennies in a Bag of Water & WATCH WHAT HAPPENS! 😱

Under Wraps

Myth - What Does A Bag of Water Outside of Your Front Door Mean?

Ever Seen Bags of Water Hang From a Porch? Here's What That Means

Seen while walking down the street. A ziplock bag tacked above a door. Seems to contain water and a few pennies. What could this be for? : r/whatisthisthing

flies in Howard Ferguson dining hall's sandwich : r/UofT

Repelling flies with water and pennies: Does the trick work?