One of the best ways I have found is to use an oxygen bleach solution.
1. Pour about 1 cup of the oxygen bleach into a five gallon bucket filled with water. Stir the water, be careful not to spill it all over something the bleach could negatively affect.
2. Put some of the water/bleach blend into a clean spray bottle, liberally spray on the surfaces to be cleaned.
3. Wait about 25-30 minutes before scrubbing the area with a soft bristled brush. An old toothbrush can help get into those hard to reach areas. If the grout is extremely stained, wait one hour before scrubbing.
4. Keep scrubbing until the area is cleaned.
5. When the area is cleaned to your satisfaction, wipe the area down with a wet cloth. It might take more than one bleach/water mixture application and scrubbing to get the area clean.
Sealing your tile/grout will help prevent future stains. I have used a grout sealer brand named "Tile Lab" and never had a problem with it. Make sure that the type of sealer you are using is rated for the type of tile surface you have. Also, it might be a good idea to either replace or touch-up the caulking around the area.
Dan, where do you get oxygen bleach?
I would like to use it on exterior wash jobs so I am thinking bulk.
Thanks, Dan, also want to know where to buy oxygen bleach?
Check out this article I wrote.
"Oxi-Clean" is a well known brand of the stuff. Not sure about getting it in bulk quantities besides places like Sam's Club there Peace.
I bought a product called stain solver and it did the best job of cleaning grout that I have found. Look at Askthebuilder.com for his product. It also worked on my PVC pergola.
Thanks everyone for the very helpful info:)
try barkeepers friend. worked for me
I use L.A.'s Totally Awesome cleaner that can be found at Dollar Tree stores. I just melts the dirt off and floats it off. Heavy dirt can be scrubbed with a brush, but it doesn't take much elbow grease. Give it a try for a buck in cost!
Use JASCO grout cleaner, available at hardware stores and you can skip all the time and sweat. On extremely yellowed wall tile grout, I tried a dozen different products / remedies (and TONS of hours scrubbing with toothbrushes), but NOTHING worked all that well (bleach, peroxide, oxi-clean, vinigar, baking soda, lemon juice, and many different grocery store tile & grout cleaners, etc.). One application of JASCO, and I was jumping up and down in joy (plus crying that I had not discovered it sooner)!!! It's a thick liquid, not quite a gel; bottle does not have an "applicator-type" cap, so swap it out with the cap from squeeze-mustard-bottle for easier application. Scrub it in a lightly with a tooth/grout brush, let it sit for 5-10 minutes, and then rinse it off thoroughly with very wet sponge. When the grout dries, you wll be absolutely amazed at the result. It's a miracle product.
I use Hydrogen peroxide mixed with baking soda. I make a soupy paste and apply with a paint brush and wait about 10 min then scrub with a scrub brush and rinse.
I rent a vaporlux machine from a tool rental and steam out my tiles and grout once a year and then re-seal them.
Great, I forgot all about the awesome cleaner as it is tough on badly soiled items from clothing steel wood and so forth thank you