Assertion: carbon monoxide | /r/ObjectUse | used for the control
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Source sentences:
text: That law, effective until January 1, 2018, adopted Food and Agricultural Code (FAC) section 6025.4 stating that carbon monoxide may be used for the control of burrowing rodent pests, provided the carbon monoxide delivery device is permanently affixed with a warning label in plain view of the operator that includes, at a minimum, the statement "DANGER: Carbon monoxide is a poisonous gas that is odorless and colorless.