well I am not very experienced in leos as of yet
but after talking to a known person on this forum I like their idea for a floor(substrate).
the reason I say floor instead of substrate is because it is exaclty that, ceramic tiles. They serve a couple of small purposes
1. easy to clean, and if you buy a box of them then you can easily swap them out at cleaning time.
2. help retain heat in the sense of electric bills,
, I figure the more heat that is retained the less the heaters have to run.
3. they can be cut to fit any size cages without to much trouble.
4. never have to buy and replace the substrate (except in the case where its free) it is the cheaper way to go.
5. no chance of them eating it, and if they did there might be some funny looking geckos with big flat square bellies.
Well like i said I am not that experienced in geckos yet, but the person that I spoke with is the person I will be purchasing a couple of leos from in the near future. Have to make the time for the trip to go get them. I hate shipping and dont trust even the best of them to do it right. Plus in this case they are only a few hours away.