you mention fly bites you can make a homemade recipe pretty easy to make 4 ounces of Avons' Skin So Soft Original Bath Oil
1 cup of vinegar (either white or apple cider vinegar will work)
30 -40 drops of 100% pure citronella essential oil
Fill the bottle the rest of the way up with water
put it into a spray bottle poundland sell them and give it a good shake everytime i find the avon so soft dry lotion keeps flies cleggs away from me this smells nice hope this helps havn't tried it on my pigs but have on my ponies