My three little chicks are now 5 and 6 days old. I've had them on layers of paper towel on top of some shelf liner. Tonight I tried putting pine shavings in the brooder for the first time. They went nuts. I watched for about 10 minutes and they were definitely eating the smaller pieces they found, not just pecking at it. I watched carefully to make sure I wasn't panicking but they were definitely swallowing some of it. I took it all back out and put in more paper towel. Should I wait a few days and try again? Thanks!