Pot Smugglers Prefer Postal Service Shipments through the mail have shot up in recent years By Nick McMaster, Newser Staff Posted Mar 16, 2010 5:30 PM CDT 28 comments Comments In this Jan. 11, 2010, photo, a worker shows a marijuana bud for sale at the Lotus Medical dispensary in Denver. (AP Photo/Ed Andrieski) (Newser) – Pot traffickers are increasingly realizing that there's no need to risk hauling their drugs across the country—they can just have the US Postal Service do it for them. Seizures of marijuana by postal inspectors have increased 400% since 2007. More than 3,600 packages with marijuana were found in 2009, leading to about 1,300 arrests. The drug is often concealed in ordinary objects, like cans of food, microwaves, and computer towers. "There is no better way to ship drugs right now," San Diego's police chief tells ABC News. "It's going up all the time."