I am using a wood and wire Cage without a floor as it provides my growing chicks a lot more room. It doesn’t have a floor so I placed it on top of a poly tarp and wrapped it about five or 6 inches up the sides to keep them from flicking wood shavings out into the room. I noticed on the bag that it said it had some lead content and that under California law they had to post that it was a danger. Will this be dangerous to my chickens? My chickens will be four eggs. Thanks for your answers in advance!