Things You'll Need
1/2 cup ammonia
1/2 cup white vinegar
1/4 cup baking soda
1 gallon warm water
Bathroom grout can easily get dirty. Over time, soap can form a thin layer of scum over the tile. To make your tile look bright and clean again, remove the soap scum from grout by breaking up the scum and then wiping it off. Make sure to open up windows in the bathroom before using any type of chemical cleaner. It's also important to wear rubber gloves to protect your hands.
Open up any windows in the bathroom, and put on a pair of rubber gloves.
Fill the bucket with 1 gallon of water.
Add 1/2 cup ammonia, 1/2 cup white vinegar and 1/4 cup baking soda to the bucket. Stir to mix the ingredients.
Pour the solution into a spray bottle and screw on the top.
Spray down the bathroom grout with the mixture, refilling the spray bottle as necessary. Let the solution sit for an hour.
Dampen a sponge and wipe down the grout. Wash out the sponge and re-wet it as needed. The sponge should easily wipe up the scum.
Rub a dry cloth over the grout to dry it thoroughly.