Ok so I went to look at another pet shop today for a Russian and the people in there were using rabbit pellets(food) as substrate. I thought that was a little weird so I asked the guy and he said that when he kept them on other substrates they got gut impaction. He said that they can burrow in this and if they accidentally eat it then its ok. Im thinking on getting it, I mean it makes sense. Just thought I would ask first though, still a newbie. Any comments?