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What's the best way to remove grout from the tiny pores in backsplash tiles? I tried grout haze remover and distilled white vinegar without much success. I am not sure if there is a certain amount of time I should leave the vinegar on the tiles before wiping off with water. Any suggestions would be appreciated.

  • Is it travertine? Some of the porous natural stones need to be sealed before grouting – Kris May 8 '18 at 0:40
  • Hello, and welcome to Stack Exchange. A close-up picture of the problem area would be helpful. – Daniel Griscom May 8 '18 at 4:05
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Depending on the type of tile, muriatic acid might do it. Recommended to test on an inconspicuous area. Follow instructions and proper safety procedures. A less dangerous and more tedious way would be to use a dental pick to remove it.

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Vinegar has a hard enough time removing just haze. Actual grout; good luck.

Tiles with holes in them are supposed to be filled with grout, and are usually floors, not backslashes. You should have chosen a grout color better suited to porous tile; which is always an option, especially if you want darker (which is always the way to go, imo).

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