Substrate for a ball python

[Zuri Indigo]

I like orchid bark, personally....it's a rich brown color & holds humidity. It also comes in large or tiny chunks...large would be best, it won't slide around so much
& snakes like traction. You'll want to check with large plant nurseries or florists to buy in large (huge) bags for the best deal. Ask & read labels to make sure it's
not sprayed with anything too.

Where do you buy your orchid bark? And how do you treat it if you do.