Abstract: An apparatus for attachment to the top container rim of a container includes a central base unit which includes a base center portion, an outer base wall downwardly depending from an outer side of the base center portion, and an inner base wall downwardly depending from an inner side of the base center portion. The attachment apparatus also includes a first side unit and a second side unit which are to opposite ends of the central base unit. The first side unit slopes downwardly toward the second side unit, and the second side unit slopes downwardly toward the first side unit. The inner base wall of the base center portion slopes downwardly toward the front ends of the first side unit and the second side unit. The outer base wall, the base center portion, and the inner base wall form an inverted U-shaped channel for fitting over a top container rim of a container. A center deflector wall is connected to the base center portion and depends upwardly therefrom.