A lid assembly for a container for containing a granular solid material, the container having an opening, the lid assembly comprising: a base adapted to engage and interfit within the opening of the container, the base having a front section, a rear section, an upper surface and an opposed lower surface, the base comprising: a first panel having first and second surfaces (28; 30) angularly oriented relative to one another to form a bridge wall, wherein a hole is defined in a portion of the first panel, wherein the hole places the upper surface of the base in communication with the opposed lower surface of the base, wherein the first surface is positioned between the hole and the second surface, wherein the bridge wall separates the front section of the base from the rear section of the base, and wherein the bridge wall is configured to restrict flow of the granular solid material from the front section to the rear section of the base; a sidewall attached to and surrounding the first panel to define a well, the sidewall adapted to engage the opening of the container; a third surface at least partially surrounding the hole; and a fourth surface positioned in the rear section of the base, wherein the fourth surface and a portion of an inner surface of the sidewall cooperate to define a cavity in the base, wherein an aperture is defined in a lower portion of the cavity, wherein the aperture places the upper surface of the base in communication with the opposed lower surface of the base, and wherein the aperture is sized and shaped so that any granular solid material present in the cavity can drain through the aperture into the container; and a cover mounted within the well in spaced relation from and overlying the first panel, wherein the cover is selectively rotatable relative to the base about and between an open position providing access to the hole, and a closed position in which access to the hole is restricted, and wherein in the closed position, at least a portion of the cover engages at least a portion of the first panel. a base adapted to engage and interfit within the opening of the container, the base having a front section, a rear section, an upper surface and an opposed lower surface, the base comprising: a first panel having first and second surfaces (28; 30) angularly oriented relative to one another to form a bridge wall, wherein a hole is defined in a portion of the first panel, wherein the hole places the upper surface of the base in communication with the opposed lower surface of the base, wherein the first surface is positioned between the hole and the second surface, wherein the bridge wall separates the front section of the base from the rear section of the base, and wherein the bridge wall is configured to restrict flow of the granular solid material from the front section to the rear section of the base; a sidewall attached to and surrounding the first panel to define a well, the sidewall adapted to engage the opening of the container; a third surface at least partially surrounding the hole; and a fourth surface positioned in the rear section of the base, a first panel having first and second surfaces (28; 30) angularly oriented relative to one another to form a bridge wall, wherein a hole is defined in a portion of the first panel, wherein the hole places the upper surface of the base in communication with the opposed lower surface of the base, wherein the first surface is positioned between the hole and the second surface, wherein the bridge wall separates the front section of the base from the rear section of the base, and wherein the bridge wall is configured to restrict flow of the granular solid material from the front section to the rear section of the base; a sidewall attached to and surrounding the first panel to define a well, the sidewall adapted to engage the opening of the container; a third surface at least partially surrounding the hole; and a fourth surface positioned in the rear section of the base, wherein the fourth surface and a portion of an inner surface of the sidewall cooperate to define a cavity in the base, wherein an aperture is defined in a lower portion of the cavity, wherein the aperture places the upper surface of the base in communication with the opposed lower surface of the base, and wherein the aperture is sized and shaped so that any granular solid material present in the cavity can drain through the aperture into the container; and a cover mounted within the well in spaced relation from and overlying the first panel, wherein the cover is selectively rotatable relative to the base about and between an open position providing access to the hole, and a closed position in which access to the hole is restricted, and wherein in the closed position, at least a portion of the cover engages at least a portion of the first panel.