If you are using paper towels over bedding, how long are you planning to keep the paper towels on there? My chicks are 6 days old and they love to destroy the paper towels. As soon as I put them down they start pulling them back so they can scratch in the Aspen bedding. But I read they may confuse it with food and eat it? Is it safe at this point to remove the paper towels. None appear to have any leg issues at all.