hey just throwing it out there that our bearded dragons are 3 and 4 months old and they have been on sand since we got them, at first the littler one would look like she was eating the sand but she spit it out and now doesnt even try to lick it or nothing, however we never feed our lizards their live feed in the encloser they are placed in a sep container to avoid sand getting in their system, and their veggies are placed in a bowl on a rock so that the sand doesnt get near the greens. our bearded dragons do great on it and havent got impacted from the sand. Im just saying take it or leave it just throwing it out their so you can make your own choice.