Worried about the chemicals in store bought fly sprays? Want to save some money by making 5 gallons of fly spray at a time? Want to have fly spray that also acts as an antibacterial? Here’s how to make your own fly spray step-by-step! 1. Use the shopping list above to get all the supplies you will need (not listed is a measuring cup) 2. Gather your ingredients and start with the clean and empty 5 gallon bucket. 3. Add in the ingredients into the bucket with their correct oz amounts listed above 4. Fill the rest of the bucket with fresh water 5. Mix and stir ingredients together 6. Fill your spray bottle (make sure to shake before each use as the Neem oil likes to sit on top) 7. Refill bottle from bucket as needed 8. Enjoy knowing your horse’s fly spray is natural and doesn’t contain harmful chemicals and you can use it as often as you like and even on yourself! *I am located in the United States and am able to get all ingredients and supplies needed from Amazon*