That I've been to wal mart, target, home depot, lowes, and ace hardware and not a single one of them sells vermiculite, perlite without miricale grow, or spaghnum peat moss with out miriclae grow. The only thing that any of these places have is miricale grow brand perilite and miriclae grow brand spaghnum peat moss both are enriched with miricale grow plant food. I'm not an expert but I would not think that these would be good for the geckos or the eggs. Although I told my b/f today during our search for this that it would be pretty funny if I incubated the eggs in it and the baby geckos came out gigantic because of the miricale grow! LoL