We had a leak and had to replace the shower floor in our basement bathroom. The large floor ties had to be removed. We have this same tile throughout the bathroom and entry hall and they no longer make it so we have to clean the 17 tiles we took out. How can I clean them well enough to put them back in? :o

Try a razor scraper “always scrape away from yourself”
Clean all mold and mildew
Or find a tile with the same color tone it's the best bet