Eqyss Barn Barrier Natural Fly Repellent blends 4 natural botanical oils for an environmentally friendly, non-toxic spray to repel flies. If you've sprayed traditional fly spray on your horse only to have the breeze blow it back in your face, you may wonder about the chemical effects for you and your horse. EQyss horse grooming products are made in the USA from natural, effective ingredients. Great for horses and people with chemical sensitivities.