DIY Fly Trap

An easy project to help reduce those pesky flies around the house, in the backyard, and around the chicken coop.

http://www.fresh-eggs-daily.com/2012/06/got-flies-heres-idea-for-diy-fly.html

This is a companion discussion topic for the original entry at https://peakprosperity.com/diy-fly-trap/

At first glance, this looks like a clever DIY idea.  But then I read the instructions, which call for using maple syrup.  Quite a bit of maple syrup, which sells for $10/ pint in my area.  And shrimp as a (rotting) protein source. Substituting cheap corn syrup and meat scraps would make it much more economical.
Julie