Ive held off putting a fly mask on my young mare as I know shes never worn one before and when I tried one on her she spent the whole time trying to rub it off. Anyway the little black flies are horrid atm, so tried again today, she seemed fine, so put her out and she went to snooze in the corner, or so I thought. A bit of head bobbing but her friend was doing the same so left her. Called back before to check her and she was still stood in the same place. Her nose was full of the horrid flies, so took the mask off, they seemed to dissapear and off she went grazing?? Seems like I have a 'dont like a fly mask' kind of girl lol.