The United States Department of Agriculture conducted testing in the summer of 2014, comparing horse fly collections from two commercial traps, the H-Trap and the HorsePal, and one standard surveillance trap, the NZI, in a wildlife refuge that was near a horse boarding farm in Cedar Key, FL. Researchers set up these three different style traps, per each manufacturer’s instructions, using no added attractants. On the first day, the researchers placed the H-Trap, HorsePal, and NZI traps at one of three sites, and then rotated them 24 hours later. This method allowed all three traps to be tested at each site. The researchers conducted three repetitions, and recorded the total number of Tabanids collected over time. The total number of horse flies collected was 3483; of that number, the H-Trap alone collected more than half (57.5%) of the total number of horse flies!
