A friend found this stuff in her garage-It's called "Prozap's Fly Die" it says it is for cattle and it is used for "fog or spray" it smells really strong almost like paint thinner. Has anyone ever heard of it? how do you use it? Im nervous to use it around their stalls because it smells so strong I wouldn't spray them with it-it's too strong. It has front label but no directions...The only one I could find online was a equine spray and that is not what this bottle is-It is actually a gallon and for cattle.