Handheld cleaning apparatus

A cleaning device comprising:

• a generally block-shaped sponge body comprising a water-permeable sponge material having a plurality of sides, the plurality of sides including:
• a first pair of opposing sides that are substantially planar and parallel to each other;
• a second pair of opposing sides that are substantially planar and parallel to each other and that extend between and are transverse to the first pair of sides;
• and
• opposing end portions disposed at ends of the sponge body;
• a first set of latitudinal channels formed in the sponge body that intersect and fully extend between each of the first pair of opposing sides without also intersecting any other sides of the sponge body;
• a second set of longitudinal channels formed in the sponge body that intersect and extend from one of the end portions toward the opposing end portion without also intersecting any other sides of the sponge body, the second set of channels intersecting and coupling to the first set of channels to allow fluid flow between the first and second set of channels;
• and
• an abrasive outer shell that coats at least one of the sides of the sponge body.