Substrate?

[Kaianuanu]

As you guys have probably seen, I just got my first carpet which is a little male coastal hatchling, and I have been asking lot of questions. Anyway, I'm now hooked on carpets, and I decided I now need a little female jungle, so now, I'm in the process of putting together a new setup. Earlier today picked up another 10 gallon from Walmart, and I already have a screen lid, I already know what lighting and heating i need to to get the right temps. Picking up another bowl and hide also shouldn't be a problem, and I can easily get some branches to make some perches from my yard, however, Im not sure what substrate to go with. I just used a Repti-carpet in my coastal's cage that I had laying around, and it gets the job done, but for this one, I want to try something more natural looking and not too messy. I like the look of reptibark but I'm afraid to using it because years ago, I had a baby black racer eat a chip and it poked through his side and eventually killled him.