The other thing to remember about cleaning tile and grout is that they are two very different materials. Tile is often stone, porcelain, ceramic, or granite while grout is a mixture of water, cement, and sand. Tile is a solid surface and is great for repealing water. In contrast, grout joints are porous so it will absorb any liquid that is spilled on it. For this reason, grout joints are typically sealed with a water-based sealant that prevents absorption. This difference is important because one is much easier to clean than the other.