Run the shower on hot. With the bathroom closed, run the shower on hot for a few minutes. The steam from the shower will help release dirt and grime. Test your cleaner first. Whatever cleaner you choose to use, test it in an inconspicuous place first. You want to make sure it doesn’t damage or discolor your tile.
Apply the cleaner. Scrub the tiles thoroughly or apply the cleaner as directed. Rinse the tiles off thoroughly. You don’t want to mix chemicals, and rinsing the tiles will help with that. Scrub the grout with bleach or a cleaning product. Dip an old toothbrush in bleach or cleaning product. Scrub along the grout to create whiter grout.
If you don’t want to use bleach, a product like Scrubbing Bubbles, Kaboom, or Lysol Bathroom Cleaner will work great. Alternatively, you can combine white vinegar and water to make your own cleaning solution.
Small and mid-sized grout brushes are a great option for cleaning your grout. You can find different sizes of these brushes where you buy cleaning supplies. Make sure the cleaner you used previously is compatible with bleach before applying this solution. For instance, neither vinegar nor ammonia should be mixed with bleach.
Rinse off the bleach or cleaning product. Let the tiles dry. Seal the grout. You should seal the grout twice a year. Sealing it helps protect it from the moisture in the bathroom.
Use a penetrating sealer. These coat the grout but still allow moisture to escape. The grout won’t crack as much with this type of sealer. Clear out everything that could block the grout. You want to have access to it to apply the sealer. Clean off the grout. If it’s discolored, apply the bleach as described above. Let it dry.