Las Vegas’ McCarran International Airport is encouraging people not to gamble their luck when it comes to flying illegally with marijuana.

According to Fox5, passengers now have the opportunity to dispose of any remaining marijuana they have before boarding their flights. Ten green containers have been placed outside of McCarran International Airport’s buildings, allowing people to rid themselves of the drug before entering the airport’s doors.

The move comes after Clark County commissioners voted to ban marijuana possession and advertising at the airport in an attempt to be compliant with federal law.

The containers, which have been dubbed “amnesty boxes,” are secured to the ground and were created so that people can drop off marijuana and prescription drugs, but not remove them.

Christine Crews, a spokeswoman for McCarran International Airport, said the containers “are offered as a way to help people comply with this ordinance.”