In 2008, there were about 3.5 million kindergarten, elementary, middle and high school teachers in the country, so we can expect almost another 500,000 to be hired by 2018. Also indicative of the high demand for teachers is the large volume of grants available for teachers.
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.
How to get rid of horseflies once and for all. One of the most vicious breed of flies are horseflies. These are not like ordinary house flies, as they have tearing and cutting type moth parts. Horseflies are an irritation to live stock and it is mainly the female ones that sit on the body of cattle or horse and draw their blood by biting them.