Anyone else having a hard time with flies this summer round? I've bought a fliespray for £15 which seemed to work last summer and prevent the flies landing on the horses, but this time I've nearly used up half the bottle over the week, as I'd spray it, would last a could 5 minutes before the flies come swarming back. I wouldn't mind it but it bothers the horses and it's a bit difficult when you're trying to pick the feet out and they are trying to rip their feet out of your hands to slam them back onto the ground and shake the flies off. I was given a homemade fly repellent by someone, and it did a better job than the one I bought but still the come swarming back. Any recipes for homemade fly sprays I could try that would work? I'm up for trying anything at the moment!