For what it is worth I do think that FR makes some good points about a general need to improve nesting options for our snakes. I've found that there really isn't a one size fits all solution.
My rat snakes seem to prefer a drier medium and I use a deep box of barely moist long fiber sphagnum for them with great success.
My kings seem to like a more moist and heavier medium. I don't have glass in the nest box but I do layer it. The bottom and thickest layer is a 50/50 mix of play sand and shredded coconut husk, which is where the snakes actually lay. On top of that I have a layer of long fiber sphagnum and finally this is weighted down with a mat of newsprint, which facilitates the "cave" Frank talks about. In my experience the newsprint provides cover (security) and helps moderate temps and moisture while allowing adequate ventilation.
My coastal plains milks will nest in either type of medium but I still get the general sense that I've yet to hit on exactly what they need or want because they are pretty actively cruising the cage right up till they lay.
Anyway I'd be interested in hearing what others have been doing outside of the normal cook book methods.


