Just wondering, why do you suggest that I don't use wood? I've already started on the project, so now I'm a little worried. Currently, I'm trying to decide on what wood to use (don't worry, it's not pine or cedar). I'm looking at birch, oak, or maple wood to build the main bulk of it. The paint would only go on the outside of the container due to the fact I'm planning to line the container (walls included) with fleece and even then I wouldn't use a lot of paint. The last thing I want is my hedge to get nibbly in places I was unprepared for and end up having him eat something really bad for him. That's why I'm asking, to be as prepared as humanly possible. Also, what wood would you suggest of the types listed?