Effective rat control requires a comprehensive plan including sanitation, habitat modification, exclusion, monitoring, population reduction, and perseverance. It is critical to avoid half-measures when seeking to control rats as they are highly adaptable and prolific.
Due to the complexities involved in controlling rats, we will refer you through the links below to literature that will help you in all aspects of rat control. One more point to understand is that toxicants should only be employed in conjunction with other control methods.
http://icwdm.org/handbook/index.asp#rod
and http://icwdm.org/wildlife/norwayrat.asp
Don’t bother with ultrasonic devices as there is no evidence that they work in actual control situations.
Ultrasonic and Subsonic Devices for Pest Control
Resources: (online)
Rodent-proof construction
