From
Burton01
This leopard gecko is a pretty efficient hunter, but the feeding method of leopard geckos is why there is so much debate over the proper substrate. Because geckos lunge and grab their prey, they are prone to grabbing loose substrate along with their prey. The substrate then has the potential to cause an impaction. Personally, I would not use this substrate; if you use any loose substrate you need to be certain your geckos are not ingesting it.

