I have for many years been interested/involved in mycology. Member of the Puget Sound Mycology Society. Here in Washington State we're fortunate to have one of the Global geniuses in soil remediation, Paul Stamets. YouTube has dozens of videos as does Ted talks. He has been involved in many competitions, specifically in removing toxins from contaminated soils, he has proved beyond any doubt that innoculating mycellia of mushrooms in the very nastiest of industrial waste contaminated soils renders them not only clean and free of toxic materials but generating an entire ecosystem as a result. My local garden store has even begun marketing Mycelated Potting soils. So, it seems if you have any concerns about using paper, cardboard,kaolin polished paper,or even inks, mushrooms or their mycelia are the answer. His book "Mycelia Running" should be in every gardeners bookshelf. You"ll be suprised how important the lowly"toadstool" is to our existence on this planet. Without them there would not be a tree taller than 4'. Dick Law
