Nessa and Lily have been on fleece for several months. I have had no problems with it until a couple weeks ago when I went to do the weekly fleece change and noticed a lovely hole had been chewed in it. I was a bit perplexed because they had never even attempted to chew on it before. And this week I noticed another, slightly smaller hole. Of course, they only do it on my favorite fleece :P So has anyone else had this problem? If so, did you manage to solve it or get it under control? I really want to stick with fleece because it is way cheaper than the paper shavings I was using before. Thanks!