(1) Wall and floor tile grout must be sealed to prevent damage from moisture and graffiti.(2) Creamy liquid appliance wax can be used, if wished, for further protection of tile and grout .(3) To clean tile grout , an old toothbrush works well.(4) Mix into a smooth paste and scrub into grout with a sponge or toothbrush.(5) Replace cracked or broken tiles or missing grout in the shower and bath areas.(6) Another application of mortar or grout creates a level surface.(7) You are correct to be concerned about the grout between the tiles, as grout is a porous material that is not easily cleaned and could harbor bacteria.(8) Pristine new white grout replaced the dingy old grout , and the tile was cleaned, buffed, and sealed to show its lively colors to best effect.(9) Tile grout is neither waterproof nor stainproof, so it usually must be sealed.(10) Using a notched trowel and working in small sections, spread 1/4 inch of grout or tile adhesive on the table surface.(11) soak off the facing paper with a damp sponge, then grout the tiles(12) After the patio has set up, you can use mortar as grout between the stones, sponging off excess before it sets up to keep things neater.(13) Let tile set overnight before applying grout .(14) What can I use that will do the job, yet not harm surrounding plants or damage the tile and grout on the porch?(15) Seal the finishing material well with tile grout , and caulk all the joints to prevent water damage.(16) Cover the tiles with grout using a rubber-bottom float or a sponge and wipe on a diagonal.