Rats are less pestilent and more lovable than you might think. Can humans learn to live with them?
Chess Openings: Learn to Play the English Rat Defense!
KB Home Defense ultrasonic repellent 220 m² - against rats and mice
Chess Openings: Learn to Play the English Rat Defense!
Ortho Home Defense Max No-Touch Bait Station (2-Pack) 0320810
Buy Nature's Defense All-Purpose Mouse & Rat Repellent, 22 oz
ADW: Rattus rattus: INFORMATION
If you have rats, make sure to mount a strong defense - Mike Henle
Nature's Defense Mouse & Rat Repellent Packets
Rodents > U.S. ARMY MEDICAL DIRECTORATE - ARMED FORCES RESEARCH