Gardening enthusiasts can use cardboard shredder for composting or things like mushroom cultivation by simply moistening shredded cardboard and placing it with plants or worms. Shredded cardboard is a money-saving option for animal bedding for pets and even livestock animals. Use and re-use: You can use and re-use the cardboards which you have with you. If you have cardboard shredder machinery you will not have to order fresh cardboards every time during packaging or shipping. You will be able to re-use the cardboards that you have bought.