DAP KWIK SEAL Grout Recolor Kit makes it easy for Do It Yourselfers to achieve professional results with superior durability in one application. Long-lasting, makes grout stain-resistant, and only takes about half of a day to complete. 3 simple steps: prepare the grout with Pre-Treat solution, apply Color+Seal and scrub into grout, remove excess residue by spraying glass cleaner on tile. Use on interior and exterior tile floors and walls. Works with all grouts except epoxy grout or silicone. Kit includes: (1) 8 fl oz bottle of Pre-Treat, (1) 8 fl oz bottle of Color+Seal, (1) grout brush, (1) squeeze top, (1) chamois. Covers: 350 sq ft of 18" x 18" tile, 250 sq ft of 12" x 12" tile, 100 sq ft of 4" x 4" tile.