I bought this to mix with paper bedding as enrichment for a rat, but I was very nervous it would be dust. Thankfully, it wasn’t dusty at all! Dust free as advertised and the bag is filled pretty much to the top. Mixing it with the paper bedding, I only used about 1/7 of the bag. It seems to do a great job masking any smell as well even if you get really close to the cage.