Get rid of flies and biting insects for good with the MannaPro Pro-Force Fly Spray with Rapid Knockdown. This horse fly repellent has a fast-acting formula that kills and repels 70 different species of insects to keep your horse happy, healthy, and clean. As an added bonus, this fly spray can also be used to kill fleas and ticks on dogs.
Begin treatment by applying 1-2 ounces daily for 2 to 3 days. After the infestation subsides, reapply once per week or at the recommendation of your veterinarian.