Ideally, all places where food is stored, processed or used should be rodent-proof. Store bulk foods, bird seed and dry pet food in metal cans with tightfitting lids. Openings where utility conduits enter buildings should be sealed tightly with metal or concrete. Doors, windows and screens should fit tightly. It may be necessary to cover edges with sheet metal to prevent gnawing.
Trapping is an effective method of control.
It is the preferred method in homes, garages and other structures where only a few rats are present. However, trapping is useless if the procedures to prevent reinfestation are not followed. The simple, inexpensive snap trap is effective and can be purchased in most hardware and grocery stores. Bait traps with peanut butter, chocolate candy, dried fruit or a small piece of hot dog or bacon tied securely to the trigger. Set them so that the trigger is sensitive and will spring easily.