Rentokil Pestfree Cat & Fox Deterrent 6- pest control By Jack Wall Posted on June 15, 2016 In Small Animals Tagged Control, Deterrent, Pest, Pestfree, Rentokil Ultrasonic Repeller for control of garden animal pests including cats, dogs, foxes, squirrels and other small animals. Operates day & night in all weather. Takes 1×9 volt battery. Inaudible to humans. Detection range of 10 meters. Poison-free.