I see alot of cages and set ups with casted or molded backgrounds. Take the Exo Terra Cages. They use a foam like molded background. The one thing I'm asking here is what is safe to use for reptiles? I see the Dishes that are molded from a Resin based substence but what is it really? I have about 60 gal of Resin here in the house but I dare not use it for the fear that it would be toxic to my reptiles.

I'm wanting to experment with my castings that I do have for my Carpet Pythons new cage, my Beardie cage and for my frogs and Geckos that I'm getting.

Any useful advice would be awesome.