I got some compressed coconut fiber material from the garden store this spring for my seed starting. It's working quite well for that, although I haven't tried taking the plants out of their starting containers yet.
No idea about the reptile stuff though.
@ai6yr I’ve used coconut coir for starting seeds, though I usually just use potting soil
It’s also good for mixing in to soil to improve drainage… I think it’s a typical ingredient in potting soils
I’m not a reptile expert, but my inclination would be to avoid stuff from an unknown source, they’re more sensitive to contamination than plants
I would suggest mixing it with other stuff, rather than using it plain. It would be pretty difficult soil for plants to cope with, by itself. But it's fine in a mix