Unfortunately, the walnut is not like sand (true sand, not silicate/crushed stone). It is more jagged and coarse. I will admit that it is one of the best looking substrates to use with a sand boa, but given the cons, it's just safer to use aspen. And the feeder doesn't have to be wet. If you have ever watched a short snouted sand boa feed, they twist and roll and get things stuck to the sides of their mouth. But wet feeders are the bigger culprit.
Forgot to add that crushed walnut shells were not originally intended for bedding, but rather for it's coarse grit nature as a sandblasting media.
http://www.kramerindustriesonline.co...nut-shells.htm
Reply With Quote