Danielle says, "Fill a ziplock bag with water and five or six pennies and hang it in the problem area. In my case it was a particular window in my home. It had a slight but significant passage way for insects. Ever since I have done that, it has kept flies and wasps away. Some say that wasps and flies mistake the bag for some sort of other insect nest and are threatened by this."

Maggie says, "I swear by the plastic bag of water trick. I have them at our house entry and all around the basement door. We saw these at an Amish grocery store and have used them since. They say it works because a fly sees a reflection and won't come around."

DJ says, "Regarding the science behind ziplock bags of water, my research found that each of the millions of molecules of water presents its own prism effect and given that flies have a lot of eyes, to them it's like a zillion disco balls reflecting light, colors, and movement in a dizzying manner. When you figure that flies are basically prey for many other bugs, animals, birds, etc., they simply won't take the risk of being around that much perceived action."