Can a bag of water keep flies away?

Ever see bags of water hanging in or near a restaurant or someone's doorway?

The theory is that these will keep flies away from the area where they are hanging. Myth or truth, the concept sounds interesting and useful. One of the reasons suggested is that light refraction confuses flies and causes them to leave the area. Read more about the concept on "HowStuffWorks"...

What do you think? Leave a comment to share your results if you have tried it...

Read the article about whether bags of water can keep flies away...