Dear Paper Recycler,
Thanks for asking. Yes, some paper cannot be recycled. Any kind of paper, whether white, colored, magazine or newspaper, cannot be recycled if it is not dry and clean. Grease and food will not mix with the water needed to break down the paper into fibers. If paper that is greasy, or has food on it, is put in with clean paper, the whole batch is contaminated and cannot be used for recycling. Also, tissue paper and paper towels are not currently recyclable.