I swapped to coconut fiber because the sand was shredding my hands! they got so dry it was crazy! The coconut fiber is really good at holding moisture, but it also stays dry as long as you dont spray it down. I only put about a centimeter of water in my rosies dish so there is little risk of her spilling it. Its dried out over night and is working really well. heats up nicely as well once dry.
Also, she loves diggin in it!