To ChickyLaura...........I'm planning to build a couple of coops around 4' by 6' for each 10 or so chickens. Then I would get pine shavings for the coops. I'm new to this so I don't know if I should put them just in the coops or all over. My actual pen is 16' by 20' but I will probably divide it into two separate pens; one for the chickens I already have and one for the newer chicks I know I will get! We have a TSC here and I will go there tomorrow to see if they have any. Can you advise if I should just get enough for the coops or the whole Pen? Thanks