What do you use for bedding? I have always used wood shavings and a Blanket, but last week one of my pigs opened up a whole bale of straw and is now using it. Two of my pigs sleep in the chicken coop on the wood shaving, but the other two sleep in the covered run where the straw is. The straw seems to stick to the pigs more, I am afraid that it might hurt the pigs eyes. What do you use?