Psilocybin is considered a manure loving mushroom.
Important thing to understand:
The spores of psilocybin mushrooms do not contain psilocybin and can be purchased legally for the purpose of studying them under a microscope.
If you do inject them into a manure loving grow bag and try to grow them they will then start to produce psilocybin which is a federal banned substance by the federal government in the United States and we do not endorse or encourage anyone to break federal law.