Designed and patented in Australia, Pest Free's electromagnetic pest control systems will drive out rats and mice and help control cockroaches. Utilising the wiring in your building Pest Free sends a signal through the walls and ceilings where pests love to hide. Pest Free is the number one selling electromagnetic pest control system in the world, and is the only product of it's kind to have been scientifically tested & proven effective. Please beware of the copy-cat products that claim to work the same as Pest Free, and even use our company name in all of their advertising in an effort to mislead you into thinking you are buying the authentic, scientifically tested and proven system, when you are not!