Liquid K2, a type of artificial cannabis that causes erratic habits when smoked, is becoming smuggled to inmates in the mail, sprayed on letters and pages of books. This kind of K2 is much more difficult to detect than conventional leafy K2 products that look a lot more like marijuana. https://www.tumblr.com/factsabouteverythingseo/748651429729812480/strongest-k2-spray-on-paper-strongest-k2-spray?source=share