The Norway rat, also called brown rats, sewer rats, wharf rats or water rats, are the most destructive and important rodent pests in the United States. They destroy and contaminate food, damage property, transmit diseases both directly and indirectly, frighten people and, when threatened, may even attack. Norway rats are found in and around warehouses, homes, factories, railyards, farm buildings, storage areas, sewers, ships, apartment buildings and other structures.
Norway rats have been successful in adapting to a remarkable variety of environmental conditions and habitats. Their physical capabilities allow them to infest most structures used by humans. These rats can climb on horizontal or vertical wires or inside pipes or conduits; jump three feet straight up or four feet out; swim through open water or in sewer lines and even dive through plumbing traps; gnaw through wood, cinder block or lead sheathing; and squeeze through openings greater than 1/2 inch.
Adult Norway rats are 12 to 18 inches long including a 5 to 8 inch tail, and weigh 7 to 18 ounces. They are sexually mature in 3 to 5 months and each litter consists of 8 to 12 young.
In 2012, the EPA redefined how rodenticides were to be sold and used by consumers. To get the latest information and updates on available rodenticides, please visit your nearest Pestop location.