A few good points about slate:
It looks good.
Used with a good thermostat, it retains and radiates heat perfectly.
It wipes clean in a second.
It is totally non-permiable.
It cannot harbour mites, ticks or bacteria.
It can't be swallowed or contaminate food in any way.
It cannot be dragged into the water bowl.
I'm no expert on many aspects of this hobby, but I've been keeping reptiles of many types for over forty years. In that time I've tried more substrates than I care to remember, slate works consistantly. Try it, you'll like it!
