Abstract: A lock is provided including a lower housing including an engagement member attached thereto, a shaft engaged with the engagement member opposite the lower housing, a ratcheting mechanism operably connected to the shaft to control the rotation of the shaft and a locking mechanism operably engaged with the ratcheting mechanism, the locking mechanism being selectively operable to control the operation of the ratcheting mechanism and the rotation of the lower housing and engagement member with regard to the shaft and ratcheting mechanism to engage the lock over an opening in a container to selectively prevent access to a material held therein.