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 live in a 30+ year old home that has Saltillo tiles in the kitchen. They are stained and needs resealing. We recently tiled the remainder of the house and there is ...
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Do you mean the grout?
That's called "grout." Here is how to clean:
https://m.wikihow.com/Clean-Grout-Between-Floor-Tiles
https://www.thespruce.com/cleaning-tile-grout-1314822
https://www.bobvila.com/articles/cleaning-grout/
Once clean, consider sealing the grout for easier day to day cleaning.
https://www.thespruce.com/sealing-tile-grout-methods-1822585
https://www.thespruce.com/grout-sealer-definition-1821387
https://www.bobvila.com/articles/how-to-seal-grout/
The most popular grout cleaning video I could find! Elsie, get to work!!
https://www.youtube.com/watch?v=CQgGDZ-U6_c
Polyblend #381 Bright White 8 oz. Grout Renew Colorant at the Home Depot. About $15.