I have four horses and if you have horses, you probably know flies are not fun. Flies bother all of my horses when the time comes but especially my paint mare. The flies bite her so bad that her legs will start to bleed. I use Pyranha fly spray and it works pretty good for everybody except my mare's legs and only her legs. Everybody also has a fly mask. For my mare's legs, I always put a little extra fly spray on but it doesn't work. I have been thinking about getting her fly boots. Is that a good idea or is there something else I could do?