You can make a natural fly repellent by mixing equal parts apple cider vinegar and water, then adding 10-15 drops of essential oils like citronella, lavender, or peppermint. This blend smells nice and keeps flies away! For horses with sensitive skin, try a gentler mix with lemon juice, water, and a bit of dish soap. Planting herbs like basil, lavender, or mint around the barn also helps repel flies naturally. These options are safe, smell great, and help keep your horse more comfortable during fly season.

Or the old horse has different metabolism. Is his diet the same as the youngsters?

I understand that garlic is a good bug repellant. Add to their feed. It exudes through their skin, so they smell like garlic, though.

Having a clean, dry barn or shed, where the horses can get inside to the dark part of the structure is a non chemical way to protect them. Horseflies do not enter dark barns. Cooler, too.

If you show your horses put a fly rug on them and spray there legs, or get them fly booties if your horse really can’t take fly spray, to minimise the discomfort, and if you show your horses need to look nice, so you can find other ways to,( i have heard of a couple of people who feed their horses garlic to keep the flies away, but if u were going to do that i ask around to see if it worked first, and if someone knows if it does please respond.)

It is made with natural pyrethrum and essential oils. (no nasty ingredients)

It is FANTASTIC!!!

Spray on horse or around stables to repel and control flying, biting insects.

The essential oils help soothe and heal open wounds or fly bitten ears

It works!!!!