Funny timing on this thread, as I am in the process of switching mine off paper to aspen. I second the recommendation for the Harlan Teklad, I've been using it for a while for my ASFs, since it's lab-grade the quality is very consistent and you get a lot in the bag since it's compressed. I still have my big breeder girls on paper though since I bring the males to their tubs, imagine getting a sliver of aspen stuck to your hemipene!![]()