... DEAD PEST CLEANUPPLUG IN-MOSQUITOES OUT! ULTRASONIC PEST REPELLERThe theory:1.Ultrasonic pest repeller is effective in controlling mice,rates, ... hearing of humans and most household pets such as dogs,cats.fish and birds,and farm animals.will not ... , pacemakers, hearing aids or other electronic equipment.Applicability:Ultrasonic pest repeller is suitable in :Home and apartments,food service,Businesses ...