Minnesota jokes the state bird is the mosquito. To discourage breeding, eliminate standing or stagnant water: store drums upside down or on their side, don’t let tires accumulate or cover them, and walk around your facility to check for where water can pool; then dump it. Empty containers under eyewashes, also.
For more information on this or other safety issues, contact CHESS at carkey[at]chess-safety.com or 651-481-9787.