Our summer horse spray is made with high concentrations of two essential oils known for their ability to effectively repel flies, mosquitos, horse flies and other bothersome insects from horses. We use pure lemon eucalyptus essential oil, citronella essential oil and the addition of avocado oil conditions the coat.
Ensure good coverage of the horse's coat to avoid patches free from the product as these untreated patches will still encourage insects to land on the horse. 
We also produce a Fly RepelGel that is easy to apply to areas such as the face, under the belly, the crest, groin and the dock.