Empty 2 liter bottle, heavy scissors or knife, duct tape, 24inch long piece of twine or rope
For the bait: Dish soap, water (I used freshly filtered. See? I'm providing the best for their last moments upon the earth. Now excuse me while I pat myself on the back.) You'll also need vinegar, sugar, and a banana. Mine came out of the freezer. What? Doesn't everyone have half a dozen black bananas in their freezer? You can also just use a chunk of raw meat, but....ew.
To begin, take the label off your bottle and using scissors or a knife, cut the top of the bottle right were the top of the lable was.
Now stir in 1/2--1 cup sugar, 1/4 cup vinegar, a couple drops of dish soap, one banana peel (you can throw the fruit in if you're feeling generous. Me? I'm making banana bread.) Add two cups of warm water and give it a good stir.
Take the top of the bottle that you cut off, place it spout down over the bait, line up the edges, and duct tape the layers together. Use your scissors to poke two holes on opposite sides of the bottle, then take your twine and tie knots to secure. Your finished trap should look like this:
Hang your traps in the barn and dispose of them when you deem them full. Your horses will thank you. And until flies are on the endangered species list and I develop a conscience about killing them, I will too.
Anyone have more tips on fly control?