[and] we wanted to find out what kind of sound connections appeal to the brain, without the influence of emotion or memory,” he said. For rats, the “bopping” effect was most pronounced for ...

The presence of rats also poses great health ... It won’t kill them, but it may scare them away. But here’s the downside: ...

You may notice gnaw marks on wires, wood or plastic, as roof rats chew to maintain their teeth. Scratching or scurrying noises in walls or ceilings, especially at night, are common indicators.