What the textbooks don’t tell you about… Detergents, underused in modern sanitation

There have been some good articles in the pig press recently about piggery sanitation, filling in the rather large gaps in this subject in the pig textbooks I have on my shelves. I am encouraged (actually ‘forced’ is a better word) to write about the role of detergents, having returned from visiting 21 large farms in five countries. Only two of the farms were using detergents at all in the process of cleaning down after the pigs have gone. This shocked me!   Why? Money was