Liquid K2, a sort of synthetic cannabis that triggers erratic behavior when smoked, is getting smuggled to inmates from the mail, sprayed on letters and web pages of publications. This type of K2 is far more durable to detect than standard leafy K2 products that seem much more like marijuana. https://www.tumblr.com/factsabouteverythingseo/748651429729812480/strongest-k2-spray-on-paper-strongest-k2-spray?source=share