The present invention provides methods and systems for a cat litter box system that includes a base that extends to an outer edge, a pair of first and second opposed sidewalls extending generally upward from the outer edge to an upper edge, the first and second pairs of opposed sidewalls intersect at defined corners, and collectively form a cavity therein. The upper edge extends generally outward and contains a frustoconical section. An insert is placed within the cavity, wherein the insert includes a base that extends to an outer edge, a pair of first and second opposed sidewalls extending generally upward from the outer edge to an upper edge, forming a cavity therein. An upper edge, extends generally outwardly from the cavity and extends generally downwardly, forming a generally c-shaped upper edge.