Abstract
Rats and mice exact a toll of the world's stored commodities far greater than can be measured in terms of the produce they eat; the cost of proofing and repairing stores, and of cleaning or rejecting contaminated foodstuffs must also be included. Attention to the design and construction of stores can minimise these losses, and baiting, particularly with the more recently introduced chronic, anti-coagulant poisons, has now become a highly effective and relatively safe method of control.