Advertisement This is probably a dumb question, but im planning on doing a 3:1 sand/excavator clay mixture for my Hadrurus arizonensis Im getting. However, the clay obviously comes in like a powder form, and the directions say I need to add water and everything. Im planning on keeping the enclosure bone dry, so do I still need to add water to this clay? If i do, should i mix it dry with the sand and then add water, or what? Thanks guys.