Dig/ Burrow Box??

Hello!
My beardie has been with me for almost a year now. Several times, maybe once a week or so, he tries to burrow in his enclosure. It’s super cute but he can’t go anywhere and seems a little upset about that. I want to possibly get him a dig box that he could sleep in if he wanted to? He is a male so it’s not for laying but what substrate should I use? I’ve seen some with coconut fiber but I’d rather not use that if possible, it irritates my skin. Thoughts? If it would be a hazard please let me know and I will absolutely not do it.
Thank you ?

When people build dig boxes for dragons who need to lay eggs, it's usually a mixture of damp play sand and topsoil. That can get pretty messy though, even if you have it set up in a bin outside of the main enclosure. A full bioactive enclosure would allow for digging, but they take quite a bit of effort to get set up properly and need plenty of space to allow for drainage and soil layers. The best thing I've found for most enclosures is to use fleece scraps or small fleece blankets that you can put in a pile on the floor of the enclosure. It allows them to burrow, doesn't get caught on their nails, and is easy to clean by throwing any dirty pieces in the washer. My guy likes to burrow down into a couple of fleece blankets when he goes to sleep at night and it works well for him.

Moved by moderator from General Discussion to Enclosures.