REALLY useful. We had a couple of scratching biting , fleece loosing sheep and farmer who co grazes with us instofated dectomax for the whole combined flock, but 4 weeks on, our 2 are still looking straggly (although not noticably scratching themselves) - does that happen, even if the mites have gone, or could I be looking at the other mites? (praying not, cause mine are pretty long fleeced Beulah ewe lambs)