This naturally based formula contains garlic oil to powerfully repel flies and other irritating insects this equine fly repellant spray is an hse approved insect repellentavailable in 750ml spray 25 litre refilldirections for use holding the bottle 15 25 cm away from your horse spray evenly over the body onto either a dry or damp coat take care to avoid the eyes creates a rich natural sheen with a non greasy finish that will not attract dust one application lasts several days re ap