Our guaranteed geese deterrent products feature a solar-powered light that is scarcely noticeable to humans but is very disruptive to the sleep of the geese, causing them to find another habitat after just a few restless nights. The solar-powered lights charge each day and flash 360 degrees, every two seconds from dusk to dawn, at eye-level of the geese. They require no maintenance and the durable ABS plastic of their bases will withstand any weather conditions. Each unit will get rid of geese in a 100-yard radius. There is a unit for every type of landscape.