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Several years after you complete a bathroom or kitchen renovation, it inevitably starts to show some wear. One culprit is grout: Over time, it stains, cracks, and becomes loose, even if it was ...

Q. I started trying to remove the cracked, discolored tile grout in my shower using a hand tool, and feel it will take at least 20 years to get it all out. Is there a better way? A. You can speed up ...