A friend of mine has a horse that she used to use pine shavings in the horses stall. She no longer wants to use pine shavings and has about 5 extra "bails" of the pine shavings. She asked me if I wanted them. I said sure. Later she tells me that some of the bags have clumps of moldy shavings. hmmmm. I must have looked concerned, because then she quickly says that it is "typical" and that you can get them that way from the store. She says sometimes the plastic around the bag gets a small hole, it rains, and that part molds. Is this really typical? Have you purchased bails of pine shavings w/ moldy clumps? Is the "rest" of the bag safe for the chickens? My chicks are 4 weeks old and will be moving soon out to their house.