Signs posted around Denver International Airport warn passengers of stiff fines if they are caught with marijuana.

So far, though, Denver police have not cited anyone for possession and have not confiscated any marijuana products since airport officials banned pot in January.

Ten people have been stopped trying to take marijuana through TSA security checkpoints, airport spokesman Heath Montgomery said Thursday. They all cooperated when police asked them to dispose of their pot.

“To have contact with 10 people of out millions passing through, it tells me most people are abiding by the rules and this is not a major issue,” Montgomery said.

Read more: Despite ban, no marijuana seized and no citations at Denver airport | The Denver Post.