Tried them all and really prefer shredded aspen. Snakes seemed to eat better when they are in this substrate (could be the voices in my head, though...).
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Mark Huntley
Sand Boa Morphs

Kenyan Sand Boa's
4.1 Rufescens
3.2 Albinos
0.2 Dodoma
4.2 Normal (orange)
2.5 Anery
0.1 Snow
2.2 Hopeful Yellow Snow
0.1 Splash Albino
1.0 Splash Anery
1.0 Orange Stripe 100% Het Anery
2.0 High Orange Stripe
1.0 Yellow Stripe
0.4 High Orange Tiger
2.2 High Orange
2.3 Boston Terriers
0.2 Sooners
8.30 Rhode Island Reds
0.0.15 Tropical Fish
0.1 Moody Wives
1.1 On the fence in-laws
2.1 Rug Rats