How do you clean grout on tile floors please and thank you

http://www.hometalk.com/diy/clean/bathroom/cleaning-grout-with-homemade-grout-cleaner-2122723

I learned how to do this from a tile installer, I use it and it's been fantastic! Mix a ratio 1:10 in a bucket of vinegar and water (1 being the vinegar). Use a deck brush and scrub the tile and grout with the mixture. After you are all done, use a warm water rinse and mop it all up. If your tile is dirty it might take a couple times to get it all the way clean but it will bring your grout back to the original color and clean all the pours out of the tile. Fantastic and natural cleaning! Good luck

I just recently cleaned my grouted bathroom floor. I used stain x pro for grout cleaning. I ordered it from Amazon. Works great. Lots of elbow grease & a stiff brush. Well worth it, its been months & my grout is still clean.

you can use a brush(with a long handle if you have one, and just vinegar-scrub it on and leave it for 30 to 45 minutes-and then rinse it off with a mop(be sure to get all of the vinegar off. It will make a big difference.

And once you get it clean, use a tile and grout sealer to protect it from dirt build up in the future.

Toilet bowl cleaner. Squirt the gel on the lines and wait 20 minutes before a light scrub off. Sparkling clean.