Roof Rats are less common and typically like to remain in an exterior environment. Roof Rats are slender, agile, quick and just as clever as the Norway rat. Harborage points on exterior can usually be found in trees, or close to an entry point along the exterior of homes and business. Much like the Norway rat these intruders tend to leave similar evidence making improper identification common. Roof Rats prefer to make their harborage outside. However, rafters in warehouse facilities, attics, large vaulted ceilings and troughs where access can be gained by a nearby tree also provide potential harborage points. Control measures are similar for the Roof Rat,. However, taking into account the difference in behaviours placement of traps and monitoring techniques should be tweaked to ensure no improper control measures.