How to Build a Horsefly Trap


The horsefly is a particularly nasty insect. Known for biting and biting hard, horseflies tend to be attracted to humans and domesticated animals such as horses, cattle and dogs. There is no mistaking a bite from a horsefly, and just one is one too many. However, using a few household supplies, you can create an easy trap that attracts the flies and locks them in, leaving you and your animals to roam in peace.

How to Build a Horsefly Trap
(William Alan Photo/Demand Media)

Things You'll Need

  • 2-liter soda bottle
  • 1/2 cup sugar
  • 1/2 cup syrup
  • 1/2 cup apple cider vinegar
  • Water
  • Duct tape
Step 1

Cut the top quarter of the soda bottle off. Be sure to cut a straight line around the diameter of the bottle, as you are going to need the top.

William Alan Photo/Demand Media
Step 2

In the bottom portion of the plastic bottle, combine the sugar, syrup and vinegar. Add water to fill the bottom portion halfway. Use a spoon to stir the ingredients together, creating the bait.

William Alan Photo/Demand Media
Step 3

Invert the top of the bottle and lay it inside the bottom, creating a funnel into the bait. Use duct tape to seal the two pieces together.

William Alan Photo/Demand Media
Step 4

Place the trap in an area that is highly trafficked by horseflies.

William Alan Photo/Demand Media

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Tips & Warnings

  • You may need to create a couple traps if you have a particularly bad horsefly problem.
  • As the flies build up, the smell of the trap will become increasingly unpleasant. If you can stand the smell, the pungent odor will only attract more flies to the trap.


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