Current weather and delay conditions for (GRU) Sao Paulo-Guarulhos International Airport Conditions
Use vinegar as a natural fly spray for your horse. You can use 2 cups of vinegar with 1 cup of water and 1 cup of Avon Skin So Soft bath oil mixed with 1 tbsp. of Eucalyptus oil. You can also add a tbsp. or two of citronella oil to this mixture. Shake it well and then spray on your horse.
Disposable fly traps are one of the best methods to trap horse flies. These traps contain an attractant that gets activated by sunlight and water. After getting activated the attractant lures the horse flies to enter the trap, once the flies enter the trap they get trapped.