I don't use the dust anymore, just the sand & I bought it only to make them fluffy
Plus, there's something about the chinchilla sand that makes Chloe think it's a potty. And a perfect potty as the clumps dry out & turn back into sand again & it never smells like urine.
As long as I have robos & Chloe using it for a toilet makes the price worth it. If the other 3 like it, then that's an added bonus
Seriously though, fluffiness is what's important