I tried the Reptile Prime for the first time today and I really think I'm going to like it. I had been using shredded aspen and sani chips, which I can't find anymore, but the Reptile Prime was a nice change. Hardly any dust and pleasing to the eye. I misted it a little bit and it seems to be holding humidity very well. It's more expensive than aspen but I've heard it lasts a good while. I bought 4 bags to try out and it took me a I used a full bag and a third of a second bag to cover 2 of my 4x2 enclosures. I'll finish the others tomorrow. So far so good though.