Hello, My name is Anthony Grano, my wife and I own a farm in Medina Ohio. I recently became interested in growing Shiitake (and other mushrooms too) on logs after I read an article on the Ohioline website called "Shiitake Mushroom Production: Inoculating Logs with Spawn." We recently thinned out some of the wooded areas on our farm and have a large number of appropriate logs available for mushroom production. The only potential issue that I have is that some of the logs have thin poison ivy vines on them (see attached pictures). Would these be 100% safe for mushroom production? I called a couple of the mushroom spore providers and they assured me that it would be fine, but I am always skeptical of people trying to sell me something. We would plan on inoculating a large number of logs and selling the mushrooms. We have been dealing with poison ivy on the farm because it runs rampant here and I feel confident that we know how to safely handle the logs and clean our tools so as to not get a rash when handling. I'm only concerned about the quality and safety of the mushrooms that would be produced on the logs. Thank you for the help, I sincerely appreciate it. Anthony Grano