Carpet and Tile and Grout Cleaning You should get your Tile and Grout cleaned regularly to keep it lasting longer and when you seal it helps to keep bacteria from going down into the grout and keeps stains from making your grout looking old to soon.
How do you keep grout from discoloring?
Use Sealant to Prevent Grout Discoloration
But even if your grout looks fresh and clean, it’s still a good idea to hire a local grout cleaning pro to give it a once-over before applying the sealant. This step will help kill any mold or mildew that may be lurking and to remove any dirt or debris.
Is it really necessary to seal grout?
Porous grouts attract water, dirt, oils, etc. While the tile industry does not require sealing, it is always recommended, especially in wet or high-traffic areas. Penetrating sealers are the most commonly used and offer high water, chemical and stain resistance