My girls were free-ranging yesterday and they lucked up on a few Styrofoam packing peanuts on the ground. They ate them like it was popcorn. I couldn't get to them in time before they had already ingested some. Ofcourse I cleaned up the remaining, but I was concerned about what they had already eaten. Does anyone see a problem that can be caused by them ingesting some or should it just smoothly go on through and out the other end with no problems? Thanks for the input!!