Abstract: The invention relates to a device for compartmentalizing a container, such as for example, a garbage bin, into a plurality of individual compartments. The device has an elongated bar, to the middle portion of which a pair of transverse arms is hingedly attached. Each outermost end of the elongated bar and of the transverse arms carries a telescopically slidingly engaged extension member to allow adapting the device to different sizes of the containers. Each extension member carries a flexible resilient clip which allows suspension of the device from a rim of the container.