Thanks very much you two for your replies.
I have given them all a teaspoon in their milk, which was before I saw the replies, so will give another. Really hoping this turns it around as I hate seeing all their little dirty bottoms. All seem well otherwise with good appetites and eating plenty of hay I think.
Is there any reason why the Baycox wouldn't have done it's job? I mean how accurate does the dosage need to be? I had the weights of the kids from 3 weeks previous and made an educated guess.
I can't have been far out, as I had weighed them fairly regularly from birth and just followed the kind of arc they were on!
Just wondering if I have missed something
They are all still jolly noisy and lively, so not keeling over just yet!