They use fly spray on the farm where I live and at least the brand they use is absolutely useless! They might as well spray water on the horses.<br>Only if you ride through an area where you know that the insects there are real bad I'd recommend to use the spray as (at least here) the horses don't enjoy being sprayed with it.<br>Remember the horses got their natural defences too, shivering skin, main, tail, scratching and moving body parts.<br>Anyway enjoy! I practised western riding once and got a real kick out of it. But at the mo dont i'm missing the most important part- the horse. I hope to take it back up soon though.<br>Reinhardt