I know that when I buy these for my chickens, make sure it says flakes and not shavings. The shavings do have cedar mixed in and cedar is toxic to foul. all foul including chickens. I always get the flakes because they are bigger in size as well and easier to work with and are for my coop 10 by 10 coop I use about 6-7 bags when I do full clean to replace all. Then as time goes by and it wears down I use about 5 bags. Winters here in the north country are colder than normal right now, so thicker bedding is wise to use for colder areas. I love my chickens. I have two penciled feather foots, welsummers, and easter eggers. I did have more, but we lost some due to cold temps, and roosters fighting, and hot temps over this summer, coop got too hot and they got respitory distress. But over all the rest are doing good.
Oh and to mention for just a tip, I use pine only. I found they asorb moisture better. hope this helps.