use a Chorlox Bleach stick.If the area is outside or in a area that is well ventilated you can use liquid swimming pool clorine (use every safety precaution from the pool supply people).I can't stress how strong this stuff is.
There is a product from Australia called Pink Stuff www.pinkstuff.com.au broom on mop off no nasties.
USe only clear cleaning solutions such as white vinegar with water (10 to 15% solution) or use ammonia with water. Be cautious when using ammonia ... do not mix with bleach!!
CLR is the best product that I have found for cleaning grout. You are able to purchase CLR at most major retailers.
If you are looking for more information on Which cleaning product works best to completely restore my tile and grout, the best place to look for the information is on www.baneclene.com/stonetech.html
The kind of grout will determine the best type of cleaning product. If you know what kind of grout was installed, refer to the manufacturer's recommendations. If you are unsure, speak to a knowledgeable salesperson at a large home improvement store, like Lowe's or Home Depot.
Tile and grout cleaning services are based on your local area. It is best to look for these services for your area by searching the Yellow Pages either online or through a Yellow Pages book. Another alternative is to contact the Better Business Bureau for reputable companies. Two national companies worth contacting would be Sears and Stanley Steamer. Of course, you could always rent the equipment to do it yourself.
The best acid mixture for cleaning grout off of tiles is muriactic acid and water. Great care must be applied when using this acid as it is extremely dangerous. The acid must be added to the water and not the other way around.
Tile grout cleaning is very difficult and you'll need a professional to do it properly. Check out your local cleaning companies and ask about their experience and the services they offer.
AnswerMix up a paste of bicarbonate of soda and water. Best to use a paintbrush or something similar to paint the paste onto the grout. Leave for a few hours and then wash off. Grout should be sparkling white. For really stubborn stains, use the same paste on a soft toothbrush and some old fashioned elbow grease.There is a product from Australia that is a broom on mop off grout cleaner no nasties www.pinkstuff.com.au
I need to get some grout and tile cleaning spray from the store. Who makes the strongest stuff? The people renting this house must have never cleaned their shower even once because it is absolutely caked on.
Acid and chemicals are best stone product.
We recommend using a sealer on your grout after it has been cleaned. This extra layer of protection seals the grout, making it resistant to spills and stains and easier to clean in the future -- keeping the grout and the surface looking clean longer. Our ceramic tile floor cleaning treatment includes: Removing loose dirt using the best vacuuming methods. Employing the finest pH neutral cleaning materials---specially formulated for thorough cleaning of ceramic tiles and grout. Repeated and thorough rinsing of surfaces in order to ensure that no cleaning materials remain (954)6246313
Borax is the best cleaning product to remove soap scum and mildew.
Most likely if bleach has lightened it, you will not be able to simply reverse the problem. The easiest solution is to paint the grout. Most tile stores will sell this. It is thinner then paint, but you will see very good and quick results. The only other real option is to regrout the floor. Since this is time consuming and messy, grout paint is the best choice.