My Tortoise is now 4! I want to build an outdoor enclosure. I've picked a great spot in the backyard that has sun for most of the day. My concern now is the materials that I can use to build the enclosure. I am thinking of a 'log' type enclosure but I am not sure if it's OK to use treated wood. It's just for the walls and the top of the enclosure where the chicken wire will go to keep out intruders. For his hide house I am thinking either redwood or cedar. Any thoughts on this? I also am trying to think of ways to keep him from digging out from under the enclosure.