I am not sure what the specifics are but anything natural is better than artificial. Think of breast milk and the fake stuff they make for babies!! lol you can leave your chameleon out as long as the temps don't get too hot, There is a shaded area, for him to get out of the sun, you have a constant water supply for hydration, and you are 100% sure your cage is predator proof and you are sure no one will tamper with the cage and steal him!. I would say if you could meet all that criteria then it would be ok.