Seven pounds of methamphetamine hidden into nacho cheese and jalapeno containers were seized by customs officials at the border crossing in San Ysidro, Calif. this week. Courtesy of U.S. Customs and Border Protection hide caption

itoggle caption Courtesy of U.S. Customs and Border Protection

Despite the "not for consumption warning," the DEA has banned the sale of products like K2, which contain herbs and spices sprayed with a synthetic compound chemically similar to THC, the psychoactive ingredient in marijuana. Kelley McCall/AP hide caption

itoggle caption Kelley McCall/AP