I use paper towels for about a week. Then I start adding cedar shavings. I have always used them until I read that they are bad. I have never had a problem with them. I didn't have a problem with the pine shavings either. I use a large clear plastic storage tub with an expandable screen over the top. Depending on the temperature, depends on what extent I go to to cover them so heat will stay in. I also use a 20 gal and 50 gal aquariums as brooders.