Why were staff wearing funny shoes?

Last week Miss Fuller and Mrs Coles put on special footwear and went walking in the chicken poo, closely watched by Mr Wildman and the chickens. Why? We were collecting the poo to send off for testing for salmonella.  This is not something that we have to do by law, because of the number of chickens that we have and the environment that they are kept in, but is something that as a school we think is worthwhile.  The samples are sent to a testing centre in Newcastle every three months.