Homax Jasco Bix 9310 Tile Guard Tile Grout Coating, Pack of 6,Homax Jasco Bix,9310" /> "TILE GUARD" TILE/GROUT COATING Restores grout lines to original white color. Guards against soiling. For showers, counter tops, floors, and walls. Not recommended for unglazed tile, slate, or concrete block. Allow 4 hour minimum to dry, 12 to 24 hours preferred.