It took a bong hit to thwart an attempted robbery at a marijuana dispensary.

Canadian police said a pot dispensary clerk fought off would-be thieves Thursday by wielding a bong at them in the Ontario store, CBC News reported.

Surveillance footage released Tuesday showed four suspects attacking two workers with bear spray at Recreational Cannabis Farmers Market in Shannonville.

The male clerk can be seen running from behind the counter, swinging a bong at the men until they left the store, according to CBC.

Authorities said the men fled in a vehicle.

Anyone with information about the suspects is asked to contact the Tyendinaga Police Service.