Ive tried many sprays on my horse and he gets very grump and quite nervous/aggressive when spray is put on! So we have decided not to spray him as my instructor thinks he is allergic. He has a fly rug but when out riding its a pain ad they are everywhere! Does anyone have any reccomendations on what i could use which wont affect him but will get flies away! I was going to get a "fly riding rug" but thought he may get hot!Thanks