After dozens of failed attempts at an effective EO fly spray that works against the flies here in Texas (where even commercial fly sprays don’t work worth a darn) I am happy to announce I have found a successful, effective natural fly spray! And it costs 1/3 of the price of commercial fly sprays!
16 oz Spray Bottle (Glass, HDPE plastic, or number 1 or number 2 PETE plastic)
1 bottle of TerraShield(15 mL/ 250 drops)
1 cup Apple Cider Vinegar
5-10 drops dish-washing soap (I use a natural free and clear dish soap)
Top off with filtered water
Mix all ingredients in the Spray Bottle and top off with filtered water. Shake before each use.
As with all fly sprays, avoid contact with horses eyes