Quote Originally Posted by AReaHerps View Post
The only concern I would have is how to easily clean the somewhat permanent background? How would you clean it? Would it better to simply buy a piece of plastic sheeting which you could just cut to fit so you can clean or replace it? I'm guessing we could build backgrounds multi-dimensional as well by adhering moss and other items?
You would clean it by turning up the water heater in your house and then spray it with water hot enough to kill bacteria. The water that comes out of my kitchen sink is hot enough to cook meat, no joke. I like to use scalding water to sanitize things because I think it's less risky than using chemicals.

You could probably attach some thin bark, but the silicone won't support a ton of weight. If you want to make a 3D background use Great Stuff Expanding Foam. There are serveral tutorials on this forum for such a project, I'd urge you to use the search feature.