I have debated with many over the years with this topic of using a plastic bag or a bag with holes. Every year I laugh with excitement to those that truely believe that a mesh bag improves their hunting, or more so future hunting. If you know anything about mycology it makes me laugh. Yes spores spread and are unseen by the human eye, but do leave a film. I have cloned and grew morels with the spores over the years with my own techniques(to prove people wrong that you can grow them), but I choose to look in nature. To the so called experience hunter a plastic bag will still release spores with wind currents. The people out there that hate plastic bags, the spores grow dependent on the weather/moisture, mycelium, and organic matter......not how you carry them around for 2-4 hours. Comments are welcome.....science versus human thought always wins.