Thanks All. Had major fluke probs two autumns ago and it affected ewes badly last lambing. Made sure kept on top fluking this year. As vet said dose is defiantly working or the sheep would be dropping like flies. Did day the sickly ones could have had fluke in them before dose in December and fluke didn't fully kill them. I find it hard deciding things. Not cause I can't but before no matter what I'd choose I'd be told by a lot I was wrong and if didn't do what someone says then I'm worse in world