Mouse & Rat Repeller

At this time of the year rodents that normally live outdoors are drawn to centrally heated homes, so it's vital to have an effective deterrent like this in place before they arrive. Each of these plug-in Ultrasonic Mouse & Rat Repellers boom out over 100 decibels of ultrasound at constantly changing frequencies which are to high for humans, dogs and cats to hear but which are well in the range of mice and rats - keeping them from your home or driving them out of it! Each unit protects an area of at least 400 square feet from rodent infestation. This pack of 4 gives you complete home protection 24 hours a day. They reduce the need for messy hazardous poisons and traps and a 2 year warranty is given. Electronic appliances such as computers and televisions are not affected. Simply plug into a standard indoor, unobstructed socket wherever there is evidence of rodent activity.