I have used Kaytee, and that is the one that I had problems with dust. the next bag of L&M I get, I will check the aspen and see what it looks like. and maybe even post a picture up here for comparison. but thanks for the advice. If you are looking for something similar to aspen, but has no dust and is biodegradable, I would use Carefresh. I used this on my snakes at one point in time, and current on my feeder colonies. It is pretty inexpensize, and keeps odors down pretty well. been 3 weeks since I changed my feeders bedding...going to do that this weekend...and the smell is just starting to come through.