my cat dumped on my last crop the dirty bugger..
its real easy to do by the way and when youve done it once you can make your own plugs for the next log..
i used ash wood last time..put some spore plugs in,put it in a bin liner in the shed for about a 10 months or so..keep it totaly dark..when you get it out it should be covered in white mycelium..soon as its out and gets a few days light youll have some shrooms saying eat me.