Step 1: Prepare the Area
Using the same method described above, prepare the area for deep cleaning.

Step 2: Prepare the Cleaning Paste
Mix 3 parts baking soda with 1 part hydrogen peroxide. Then add a tablespoon of dishwashing liquid to form a paste. The 3 ingredients in this powerful paste clean grout in specific ways:

1. The baking soda acts as a mild abrasive.
2. The hydrogen peroxide creates a chemical reaction when combined with the baking soda, which releases bleaching oxygen ions.
3. The dishwashing liquid helps to dissolve grease and dirt so it can be removed more easily.

NOTE: This method may also cause damage to tiles due to the bleaching oxygen ions that are released. If possible, first test it out on a small patch that’s generally hidden from view.

Step 3: Apply the Paste with a Brush
Using a nylon bristled brush or gloved fingers, apply the paste to the grout. Ensure that all areas that you want to clean are properly coated with the paste so that you get an even result. 

Step 4: Daydream About How Beautiful Your Home Will Look
The paste needs at least 15 minutes to work its magic. Like the pervious method, you may see some bubbling happen as it does its thing. Give it a bit of time to ensure that the paste fully remove the stains in the grout. 

Step 5: Final Clean
Using warm water, mop up the the paste. Make sure you follow our recommendations in Step 6 of the previous method. If you’re doing a large area, you may want to start by using a moist cloth to clean up the bulk of the paste and then mop the area. Ensure that no residue if left behind, otherwise the soap could be slippery and the bleaching may effect the tiles if left for a long period of time.