Can't believe how nasty the flies are this year, yesterday we had to trim a lamb who had fly stuff on his bum area and the flies had laid eggs and pitched into his back and shoulders on perfectly clean wool!
Also why just one lamb some get it some don't? we also notice certain ewes do seem particuarly prone to it year after year.
Not sure why they go for the shoulder area but they do, so when you put on your Crovect or whatever, do a stripe down the back, down each shoulder to the armpit, then around the bum and tail, and up under the crutch, also a dab on the horn area, whether they are horned or not. Also, when a sheep has been struck once this attracts other flies to the animal, so if you find big maggots, search carefully for patches of little ones too, or unhatched eggs
