Okay thanks, I will try that. I wonder if they all might have a bit of a bug or something at the moment as they all seem to be off their food at the moment (normal and raw).

Also Roxy, (who I don't think really ate anything yesterday) was sick a bit this morning, and not the normal undigested cat food type sick either, so I think she may have a bit of an upset tummy.
Murray has had the runs a bit too yesterday and as he has not eaten any raw yet, I don't think it has anything to do with the change in diet.

I might have a bit more luck when they get over whatever they have got.