I use an UTH for my Rosies. I just use a little less substrate over the UTH, but give them enough to still burrow if they need to. I went away from sand and decided to go with coconut fiber substrate (this), which they can burrow into much easier. I used crushed walnut (a sand substitute), but they seem to like the coconut fiber better.

I also use UVB lighting on 12hr cycles to simulate daytime.