Removing black mold from shower grout is similar to how you would remove mold from kitchen grout. There are many DIY mold grout removal techniques highlighted in the article that will have the same results on shower grout. Don't hesitate to contact professional services if it seems like the mold infestation is out of control. Tips on how to prevent mold in grout include keeping your shower grout clean and dry, making sure all leaks are repaired promptly, and that any areas where moisture can collect are properly sealed.