I read where it says for the first day, to put down paper towels. Do you go longer? Why? Will it be safe enough to take it out after a day? They are all eating well and "stealing" bits of shavings from under the towels anyway. The little buggers grab the paper at the edge and run backwards to get at the shavings. Kinda cute, but defeats the purpose of having paper towels in there. I can't belive how much these little balls can poop! But I guess thats a good thing. So, would it be ok to take the paper towels out now? Or wait?