Fill a spray bottle with a 1:1 mixture of vinegar and warm water. Spray on the grout and let it stand for 5 to 10 minutes and then scrub with a stiff brush. You can also cover the grout lines with a paste of baking soda and water and spray on the vinegar/water mixture previously described.
Every time I clean my mirrors, they end up having tons of streaks and almost look worse than before I started. What could I use to clean them that won't leave streaks...
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I have an old black tiled floor in my foyer. I hate it, but its quite a large area to replace at this time ($$) so I just want to clean the grout, which I try to wit...
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https://www.youtube.com/watch?v=CQgGDZ-U6_c
https://youtu.be/O-42iHzimis
After you get it cleaned, you'll want to seal it with a sealing product you can get at the hardware store.
Bleach
Fill a spray bottle with a 1:1 mixture of vinegar and warm water. Spray on the grout and let it stand for 5 to 10 minutes and then scrub with a stiff brush. You can also cover the grout lines with a paste of baking soda and water and spray on the vinegar/water mixture previously described.
undiluted Clorox use an old tooth brush just on the grout. Let stand a few minutes and mop entire bathroom with vinegar and water mixed to rinse.