To be fair to our vet, they do usually dispense small amounts (I just bought fourteen sponges for instance). It seems to depend on whether lots of other people are asking for the same thing, or indeed whether they happen to have a bottle open already, say because one of the vets needed one dose for a particular animal.
Let's hope they're clear following the dectomax jab - I'm running short of non-sheepy grass (i.e. the back garden
) to keep them on!!
EDIT: So I've just done individual FECs for three of the sheep (number four wasn't for pooing), and found... wait for it.... ONE measly worm egg.
The trouble is, though that's statistically very close to zero, psychologically it's quite some way off it! Damn!