Fly Eyes

Insects have compound eyes. Instead of one lens they see through two
spheres with many lenses. But apart from that they also often have extra single
lens eye on the front of the head. Each lens of the compound eye catches it's
own image. The final image an insect sees is like a mosaic. The more
lenses the compound eye bears the higher the resolution of the image. The
two large spherical eyes of a fly give an almost complete 360 degree vision.

While having breakfast in a quaint little coast town last spring, we noticed a ziplock baggie full of water hanging above the open door. Strange....Interesting....Off the Wall. There was also a sign posted next to it on the door frame. We looked at it, stared at it then I could take it no more...had to get up and see what it was all about.

Seems when a fly sees the bag of water his eyes mulitply the bags and gives the flies the impression that there is a wall of water in front of them and they will not cross it. So...this resturant hung a bag of water above the door. We did not see any flies in the place so figured there must be something to this. When we got home I filled a quart ziplock bag with water and tacked it above the sliding door.

Our grandkids are in and out the patio door, the adults are in and out the patio door, the cat is in and out the patio door. All last summer our patio door was open. We had exactly 2 flies enter out house all summer long.

Last wknd I filled another quart ziplock baggie and found a large pushpin and hung up our "fly screendoor". If you try this, let me know if it works as good at your house as it does at ours. I love these natural, no chemical solutions to pesky issues.