I was told that I should wait until my babies are at least 3 weeks old before I use the pine bedding because they could ingest it, expand in their tiny tummies, and kill them. No problem. I just laid newspaper down, and change it daily. Apparently, my chicks don't understand the concept that eating newspaper is bad for them. They are a week and a half old, and find the edges of the newspaper, pluck at it, rip it, and run. Then the game of "catch the chick with the food in it's beak" commences. They are shredding the newspaper and eating some of the pieces! Now, if wood is bad for their digestion, so is newspaper! Not only is it NOT "as nature intended", but it's got chemicals in it from the ink! What can I do???? What else can I use until they are old enough for the pine bedding??