Andy, I should have been clearer in agreeing with you: there were a lot of contributing factors to the smell, as you said. The reason, apparently, that they were not going to go away was because the carpeting was contributing to the problem by trapping all the nastiness underneath. I think some suggestions with regard to "living" or organic flooring were made by Mr Heap when he visited in the week. I'm not sure it could have been to do with the sewage lines, to be honest, as there was a similar problem in the Blackmore Gardens marquee - though the smell wasn't quite as bad.

But it was definitely nothing to do with the straw, which was being replaced regularly and was clean.