Electromagnetic Pest Repellent - Physics Stop
Marcus Wilson • Nov 11, 2010 •
I saw in the newspaper yesterday an advert for an 'ultrasonic and electromagnetic' mouse and rat repeller. That got me interested. The ultrasonic bit seems to be plausible enough - I don't know much about rodent ear physiology, but I'm willing to believe they can hear sounds at higher frequency to us and to dogs and cats (which, the advert … Read More