for those chemicals? >> we're not aware. >> reporter: which brings us to our online purchase of the synthetic drugs we sent to a chemical lab in ann arbor, michigan. it is here that our packs of afghan black ultra, ivy dove and ocean snow were tested and all of them contain dangerous chemicals sold according to greg with only one purpose. >> we found a variety of cub stances including synthetic flavonoids and hother chemicals. >> reporter: how dangerous is this stuff? >> quite dangerous. there is a variety of reported effects ranging from rapid or irregular heart beat, hallucinations, seizures, psychosis, there are several