If you don’t use a container and live somewhere wet like I do expect to be fighting off slugs. Anytime I put mycelium into the ground directly it’s an issue. It’s like a slug beacon. Same with wild Psilocybes. Usually slugs get to them and amanitas before humans. It’s hard to imagine psilocybin being any kind of deterrent to slugs. The definitely don’t mind it or mescaline.