The Victor PestChaser Rodent Repellent with Nightlight and Extra Outlet provides an effective barrier to keep mice and rats away from your home. The high-frequency noise emitted is inaudible to humans but sounds like a jackhammer to mice and rats which makes them want to turn tail and scurry away. Never worry about having to choose between an effective rodent repellent and plug space. The PestChaser comes equipped with an extra outlet on the bottom to ensure you can stay connected and repel nuisance rodents at the same time. The nightlight feature emits a non-intrusive soft glow that not only keeps you from stubbing your toes at night but lets you know the repellent is working. The Victor PestChaser Rodent Repellent was designed to be poison-free and non-toxic and will not harm humans or non-rodent pets. While humans and most pets cannot hear the high-frequency sound, rabbits and any rodent pets are sensitive to the sound. Be sure to place PestChasers in an area away from these pets.