This video should help: https://www.diynetwork.com/how-to/skills-and-know-how/masonry-and-tiling/how-to-remove-and-replace-grout

Tedious job. You have to dig or grind it out without chipping the tile. Another option is to clean it and paint the grout. I used linen white oil based paint several years ago and it still looks good.

https://www.thespruce.com/remove-tile-grout-in-a-few-simple-steps-1822630 https://www.youtube.com/watch?v=9ZDhTJ6a9Uk https://www.youtube.com/watch?v=UKLdeHU0d-M https://www.youtube.com/watch?v=DytsjSHlCWU

Hi Ed: Here is a site that you may find helpful: https://www.westlakehardware.com/videos/ask-the-experts/what-is-the-best-way-to-remove-grout-and-regrout-tile/ Good luck

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