So...I have this embarrassing problem. The grout in one of our bathrooms is perpetually moldy. It's not for lack of trying to clean it, though! For years, I've struggled to get that grout mold-free, using all kinds of different cleaners...but the mold always won the war. Then I (finally!) realized the problem wasn't a matter of finding the right cleaner. After all, the best killer of mold is ordinary bleach. The problem was keeping the cleaner on the mold long enough for the bleach to do its…
