I grow shiitake mushrooms at my parents' house. They are pesticide-free and disinfectant-free, so they are safe for pets. *How about using them as breeding material for small animals and reptiles, in addition to insects? Please check the condition in the photos. Please note that we do not accept claims regarding dirt or other attachments due to the natural wood. [Notes] Due to the natural wood, there may be bark peeling, drying cracks, insect bite marks, etc. Returns and exchanges are not possible to prevent trouble. Please purchase after you are satisfied.