Current weather and delay conditions for (GRU) Sao Paulo-Guarulhos International Airport Conditions
Another option is to mix small amounts of apple cider vinegar with the animal's drinking water; consuming this solution is known to change the blood pH of the horse, thus keeping horseflies away. Cider vinegar, coupled with essential oils, is also used in home sprays as the sharp odor may repeal horseflies.
Repellent #3. 1  Get the ingredientsâ1 cup vinegar and baby oil, 1 tablespoon dish soap and Skin so Soft, 1 cup water, and Â¼ cup Pine-Sol. 2  Take all the ingredients and mix it in a bowl. 3  Shake the bottle properly before you spray it on the horses.  The spray will keep flies and gnats away, plus keep the coat shiny.