Patent ID: 7210188

Claim:
A sponge adapted to clean grout in a tile surface that includes a plurality of tiles disposed in spaced apart relation to one another, and having a strip of grout disposed between contiguous tiles, each strip of grout forming an elongate concavity relative to the respective surfaces of the tiles, comprising: a main body having a solid, generally parallelepiped structure that includes a flat top wall, a flat bottom wall, a pair of flat, longitudinally-extending side walls, and a pair of flat, transversely extending side walls; a first plurality of longitudinally extending, parallel convexities formed in said flat bottom wall; said main body and said convexities being formed of a resilient, flexible material; said convexities entering into and conforming to said elongate concavities when said sponge is in use; each convexity of said first plurality of convexities having a first predetermined height relative to said flat bottom surface; each elongate concavity formed by each strip of grout having a predetermined depth; said first predetermined height slightly exceeding said predetermined depth; a second plurality of longitudinally extending, parallel convexities formed in said flat bottom wall; each convexity of said second plurality of convexities having a second predetermined height less than said first predetermined height of said convexities of said first plurality of convexities; said convexities of said second plurality of convexities being formed of a resilient, flexible material; said convexities of said second plurality of convexities entering into and conforming to said elongate concavities when said sponge is in use; whereby said sponge is adapted to clean grout between tiles.