Agaricus bisporus, people who unthinkingly and unquestioningly follow rules, just because "it's the rules", are a far greater danger than those people in this thread who have the maturity and brainpower to assess the risks themselves! If you truly believe that all rules are made by people who know better than you, you must consider yourself barely more intelligent than a newt...
PCL is a proven, safe technology (if you can even call it a "technology", it's so simple) that is kept out of the UK by lazy, unthinking bureaucrats who aren't worthy of washing our cowlings
